10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2011 Commission file number 1–6770

MUELLER INDUSTRIES, INC.

(Exact name of registrant as specified in its charter)

Delaware	25-0790410
(State or other jurisdiction	(I.R.S. Employer
of incorporation or organization)	Identification No.)

8285 Tournament Drive, Suite 150
Memphis, Tennessee	38125
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (901) 753-3200

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Name of each exchange on which registered
Common Stock, $0.01 Par Value	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark whether the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.           Yes  SNo  £

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.           Yes  £No  S

Indicate by a check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes  SNo  £

Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit and post such files).Yes  SNo  £

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (Section 229.405 of this chapter) is not contained herein, and will not be contained, to the best of Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. S

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.  See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filerS	Accelerated filer£
Non-accelerated filer£	Smaller reporting company£

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Act).

Yes  £No  S

The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the Registrant’s most recently completed second fiscal quarter was $1,417,562,617.

The number of shares of the Registrant’s common stock outstanding as of February 24, 2012 was 38,247,058 excluding 1,844,444 treasury shares.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the following document are incorporated by reference into this Report: Registrant’s Definitive Proxy Statement for the 2012 Annual Meeting of Stockholders, scheduled to be mailed on or about March 21, 2012 (Part III).

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MUELLER INDUSTRIES, INC.

_____________________

As used in this report, the terms “Company,” “Mueller,” and “Registrant” mean Mueller Industries, Inc. and its consolidated subsidiaries taken as a whole, unless the context indicates otherwise.

____________________

TABLE OF CONTENTS

			Page
Part I
	Item 1.	Business	4
	Item 1A.	Risk Factors	10
	Item 1B.	Unresolved Staff Comments	13
	Item 2.	Properties	14
	Item 3.	Legal Proceedings	16
	Item 4.	Mine Safety Disclosures	19
Part II
	Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	20
	Item 6.	Selected Financial Data	23
	Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	24
	Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	24
	Item 8.	Financial Statements and Supplementary Data	24
	Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	24
	Item 9A.	Controls and Procedures	24
	Item 9B.	Other Information	27
Part III
	Item 10.	Directors, Executive Officers and Corporate Governance	27
	Item 11.	Executive Compensation	27
	Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	28
	Item 13.	Certain Relationships and Related Transactions, and Director Independence	28
	Item 14.	Principal Accounting Fees and Services	29
Part IV
	Item 15.	Exhibits, Financial Statement Schedules	29
Signatures			33
Index to Consolidated Financial Statements			F-1

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PART I

ITEM 1. BUSINESS

Introduction

The Company is a leading manufacturer of copper, brass, plastic, and aluminum products.  The range of these products is broad:  copper tube and fittings; brass and copper alloy rod, bar, and shapes; aluminum and brass forgings; aluminum and copper impact extrusions; plastic pipe, fittings and valves; refrigeration valves and fittings; fabricated tubular products; and steel nipples.  The Company also resells imported brass and plastic plumbing valves, malleable iron fittings, faucets and plumbing specialty products.  Mueller's operations are located throughout the United States and in Canada, Mexico, Great Britain, and China.

The Company's businesses are aggregated into two reportable segments: the Plumbing & Refrigeration segment and the Original Equipment Manufacturers (OEM) segment.  For disclosure purposes, as permitted under Accounting Standards Codification (ASC) 280, Segment Reporting, certain operating segments are aggregated into reportable segments.  The Plumbing & Refrigeration segment is composed of the Standard Products Division (SPD), European Operations, and Mexican Operations.  The OEM segment is composed of the Industrial Products Division (IPD), Engineered Products Division (EPD), and Jiangsu Mueller–Xingrong Copper Industries Limited (Mueller-Xingrong), the Company’s Chinese joint venture.  Certain administrative expenses and expenses related primarily to retiree benefits at inactive operations are combined into the Corporate and Eliminations classification.  These reportable segments are described in more detail below.

SPD manufactures and sells copper tube, copper and plastic fittings, line sets, plastic pipe, and valves in North America and sources products for import distribution in North America.  European Operations manufacture copper tube in Europe, which is sold in Europe and the Middle East; activities also include import distribution in the U.K. and Ireland.  Mexican Operations consist of pipe nipple manufacturing and import distribution businesses including product lines of malleable iron fittings and other plumbing specialties.  The Plumbing & Refrigeration segment sells products to wholesalers in the HVAC (heating, ventilation, and air-conditioning), plumbing, and refrigeration markets, to distributors to the manufactured housing and recreational vehicle industries, and to building material retailers.

The OEM segment manufactures and sells brass and copper alloy rod, bar, and shapes; aluminum and brass forgings; aluminum and copper impact extrusions; refrigeration valves and fittings; fabricated tubular products; and gas valves and assemblies.  Mueller-Xingrong manufactures engineered copper tube primarily for air-conditioning applications; these products are sold primarily to OEMs located in China.  The OEM segment sells its products primarily to original equipment manufacturers, many of which are in the HVAC, plumbing, and refrigeration markets.

Information concerning segments and geographic information appears under “Note 15 - Industry Segments” in the Notes to Consolidated Financial Statements for the year ended December 31, 2011 in Item 8 of this Report, which is incorporated herein by reference.

The majority of the Company’s manufacturing facilities operated at significantly below capacity during 2011, 2010, and 2009 due to the reduced demand for the Company’s products arising from the general economic conditions in the U.S. and foreign markets that the Company serves.  The U.S. housing and residential construction market has not recovered from the  recent economic downturn.  The recent years from 2009 through 2011 had the lowest recorded housing starts since recordkeeping began in 1959.  From 1959 through 2007, annual new housing starts averaged 1.5 million units.  Per the U.S. Census Bureau, new housing starts in the U.S. were 609 thousand in 2011, which compares with 587 thousand in 2010 and 554 thousand in 2009, all of which are substantially below average historic levels.  Mortgage rates have remained at low levels during 2011, 2010 and 2009, as the average 30-year fixed mortgage rate was 3.96 percent in December 2011, 4.71 percent in December 2010, and 4.93 percent in December 2009.  Commercial construction has also declined significantly in recent years and, in fact, most categories remain at levels less than a decade ago.  According to the U.S. Census Bureau, the private nonresidential value of construction put in place was $268.0 billion in 2011, $261.8 billion in 2010, $367.9 billion in 2009, and $408.6 billion in 2008.  Business conditions in the U.S. automotive industry were also exceptionally difficult in the economic downturn during 2008 and 2009, which affected the demand for various products in the Company’s OEM segment; however, some improvements have recently occurred.  These conditions have significantly affected the demand for virtually all of the Company’s core products.

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The Company is a Delaware corporation incorporated on October 3, 1990.

Plumbing & Refrigeration Segment

The Company’s Plumbing & Refrigeration segment includes SPD, which manufactures a broad line of copper tube, in sizes ranging from 1/8 inch to 8 inch diameter, which are sold in various straight lengths and coils.  The Company is a market leader in the air-conditioning and refrigeration service tube markets.  Additionally, the Company supplies a variety of water tube in straight lengths and coils used for plumbing applications in virtually every type of construction project.  SPD also manufactures copper and plastic fittings, line sets, and related components for the plumbing and heating industry that are used in water distribution systems, heating systems, air-conditioning, and refrigeration applications, and drainage, waste, and vent systems.  A major portion of SPD’s products are ultimately used in the domestic residential and commercial construction markets.

The Plumbing & Refrigeration segment also fabricates steel pipe nipples and resells imported brass and plastic plumbing valves, malleable iron fittings, faucets, and plumbing specialty products to plumbing wholesalers, distributors to the manufactured housing and recreational vehicle industries and building materials retailers.

On August 6, 2010, the Company expanded its existing line sets business by purchasing certain assets from Linesets, Inc., a manufacturer of assembled line sets with operations in Phoenix, Arizona and Atlanta, Georgia.  Net sales for the acquired operations were approximately $9.2 million in 2009.

The Plumbing & Refrigeration segment markets primarily through its own sales and distribution organization, which maintains sales offices and distribution centers throughout the United States and in Canada, Mexico, and Europe.  Additionally, products are sold and marketed through a network of agents, which, when combined with the Company’s sales organization, provide the Company broad geographic market representation.

These businesses are highly competitive.  The principal methods of competition for the Company’s products are customer service, availability, and price.  The total amount of order backlog for the Plumbing & Refrigeration segment as of December 31, 2011 was not significant.

The Company competes with various companies, depending on the product line.  In the U.S. copper tube business, the domestic competition includes Cerro Flow Products, Inc., Cambridge-Lee Industries LLC (a subsidiary of Industrias Unidas S.A. de C.V.), Wolverine Tube, Inc., KobeWieland Copper Products LLC, and Howell Metal Company (a subsidiary of Commercial Metals Company), as well as many actual and potential foreign competitors.  In the European copper tube business, Mueller competes with several European-based manufacturers of copper tube as well as other foreign-based manufacturers.  In the copper fittings market, domestic competitors include Elkhart Products Company (a subsidiary of Aalberts Industries N.V.) and NIBCO, Inc., as well as several foreign manufacturers.  Additionally, the Company’s copper tube and fittings businesses compete with a large number of manufacturers of substitute products made from other metals and plastic.  The plastic fittings competitors include NIBCO, Inc., Charlotte Pipe & Foundry, and other companies.  Management believes that no single competitor offers such a wide-ranging product line as Mueller and that this is a competitive advantage in some markets.

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OEM Segment

The Company’s OEM segment includes IPD, which manufactures brass rod, nonferrous forgings, and impact extrusions that are sold primarily to OEMs in the plumbing, refrigeration, fluid power, and automotive industries, as well as to other manufacturers and distributors.  The Company extrudes brass, bronze, and copper alloy rod in sizes ranging from 3/8 inches to 4 inches in diameter.  These alloys are used in applications that require a high degree of machinability, wear and corrosion resistance, as well as electrical conductivity.  IPD also manufactures brass and aluminum forgings, which are used in a wide variety of products, including automotive components, brass fittings, industrial machinery, valve bodies, gear blanks, and computer hardware.  IPD also serves the automotive, military ordnance, aerospace, and general manufacturing industries with cold-formed aluminum and copper impact extrusions.  Typical applications for impacts are high strength ordnance, high-conductivity electrical components, builders’ hardware, hydraulic systems, automotive parts, and other uses where toughness must be combined with varying complexities of design and finish.  The OEM segment also includes EPD, which manufactures and fabricates valves and custom OEM products for refrigeration and air-conditioning, gas appliance, and barbecue grill applications.  Additionally EPD manufactures shaped and formed tube, produced to tight tolerances, for baseboard heating, appliances, and medical instruments.  The total amount of order backlog for the OEM segment as of December 31, 2011 was not significant.

On December 28, 2010, the Company purchased certain assets from Tube Forming, L.P. (TFI).  TFI has operations in Carrollton, Texas, and Guadalupe, Mexico, where it produces precision copper return bends and crossovers, and custom-made tube components and brazed assemblies, including manifolds and headers.  TFI's estimated net sales for 2010 were approximately $35 million.

On February 27, 2007, the Company acquired 100 percent of the outstanding stock of Extruded Metals, Inc. (Extruded).  Extruded, located in Belding, Michigan, manufactures brass rod products, and during 2006 had annual net sales of approximately $360 million.  The acquisition of Extruded complements the Company’s existing brass rod product line.

IPD and EPD primarily sell directly to OEM customers.  Competitors, primarily in the brass rod market, include Chase Brass and Copper Company, a subsidiary of Global Brass and Copper Holdings, Inc., and others both domestic and foreign.  Outside of North America, IPD and EPD sell products through various channels.

Labor Relations

At December 31, 2011, the Company employed approximately 3,750 employees, of which approximately 1,975 were represented by various unions.  Those union contracts will expire as follows:

Location	Expiration Date
Port Huron, Michigan (Local 218 I.A.M.)	May 1, 2013
Port Huron, Michigan (Local 44 U.A.W.)	July 20, 2013
Belding, Michigan	August 15, 2012
Wynne, Arkansas	June 28, 2015
Fulton, Mississippi	August 1, 2012
North Wales, Pennsylvania	August 3, 2012
Waynesboro, Tennessee	November 9, 2012

The union agreements at the Company's U.K. and Mexico operations are renewed annually.  The Company expects to renew its union contracts without material disruption of its operations.

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Raw Material and Energy Availability

The major portion of Mueller’s base metal requirements (primarily copper) is normally obtained through short-term supply contracts with competitive pricing provisions (for cathode) and the open market (for scrap).  Other raw materials used in the production of brass, including brass scrap, zinc, tin, and lead, are obtained from zinc and lead producers, open-market dealers, and customers with brass process scrap.  Raw materials used in the fabrication of aluminum and plastic products are purchased in the open market from major producers.

Adequate supplies of raw material have historically been available to the Company from primary producers, metal brokers, and scrap dealers.  Sufficient energy in the form of natural gas, fuel oils, and electricity is available to operate the Company’s production facilities.  While temporary shortages of raw material and fuels may occur occasionally, to date they have not materially hampered the Company’s operations.

During recent years, an increasing demand for copper and copper alloy primarily from China had an affect on the global usage of such commodities.  The increased demand for copper (cathode and scrap) and copper alloy products from the export market, from time-to-time may cause a tightening in the domestic raw materials market.  Mueller’s copper tube facilities can accommodate both refined copper and certain grades of copper scrap as the primary feedstock.  The Company has commitments from refined copper producers for a portion of its metal requirements for 2012.  Adequate quantities of copper are currently available.  While the Company will continue to react to market developments, resulting pricing volatility or supply disruptions, if any, could nonetheless adversely affect the Company.

Environmental Proceedings

Compliance with environmental laws and regulations is a matter of high priority for the Company.  Mueller’s provision for environmental matters related to all properties was $0.4 million for 2011 and $5.4 million for 2010.  The reserve for environmental matters was $22.9 million at December 31, 2011 and $23.9 million at December 25, 2010.  Environmental costs related to non-operating properties are classified as a component of other income (expense), net and costs related to operating properties are included in cost of goods sold.  The Company does not anticipate that it will need to make material expenditures for compliance activities related to existing environmental matters during the remainder of the 2012 fiscal year, or for the next two fiscal years.

Non-operating Properties

Southeast Kansas Sites

By letter dated October 10, 2006, the Kansas Department of Health and Environment (KDHE) advised the Company that environmental contamination has been identified at a former smelter site in southeast Kansas.  KDHE asserts that the Company is a corporate successor to an entity that is alleged to have owned and operated the smelter from 1915 to 1918.  The Company has since been advised of a possible connection between that same entity and two other former smelter sites in Kansas.  KDHE has requested that the Company and other potentially responsible parties (PRPs) negotiate a consent order with KDHE to address contamination at these sites.  The Company has participated in preliminary discussions with KDHE and the other PRPs.  The Company believes it is not liable for the contamination but as an alternative to litigation, the Company has entered into settlement negotiations with one of the other PRPs.  The negotiations are ongoing.  In 2008, the Company established a reserve of $9.5 million for this matter.  Due to the ongoing nature of negotiations, the timing of potential payment has not yet been determined.  The Company has also agreed to share the costs of a preliminary site assessment at one of the former smelter sites with two other PRPs and currently is negotiating the terms of an agreement and work plan with KDHE by which the PRPs would study the site without conceding liability.

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Eureka Mills Site

On December 2, 2010, the United States District Court for Utah entered a consent decree between the Company, the United States, and the State of Utah.  The decree resolves the claims asserted by the U.S. and the State of Utah related to Eureka Mills Superfund Site located in Juab County, Utah.  The Company’s connection to the Eureka Mills Site is through land within the site that was owned by Sharon Steel Corporation (Sharon), its predecessor, and a 1979 transaction with UV Industries (UV) in which Sharon allegedly assumed certain of UV’s liabilities.  During 2010, the Company provided $2.5 million to settle its claims, of which $250 thousand was paid to the State of Utah in December 2010 and the remainder was paid to the U.S. in February 2011.

Shasta Area Mine Sites

Mining Remedial Recovery Company (MRRC), a wholly owned subsidiary, owns certain inactive mines in Shasta County, California.  MRRC has continued a program, begun in the late 1980’s, of sealing mine portals with concrete plugs in mine adits, which were discharging water.  The sealing program has achieved significant reductions in the metal load in discharges from these adits; however, additional reductions are required pursuant to an order issued by the California Regional Water Quality Control Board (QCB).  In response to a 1996 Order issued by the QCB, MRRC completed a feasibility study in 1997 describing measures designed to mitigate the effects of acid rock drainage.  In December 1998, the QCB modified the 1996 order extending MRRC’s time to comply with water quality standards.  In September 2002, the QCB adopted a new order requiring MRRC to adopt Best Management Practices (BMP) to control discharges of acid mine drainage.  That order extended the time to comply with water quality standards until September 2007.  During that time, implementation of BMP further reduced impacts of acid rock drainage; however, full compliance has not been achieved.  The QCB is presently renewing MRRC’s discharge permit and will concurrently issue a new order.  It is expected that the new permit will include an order requiring continued implementation of BMP through 2015 to address residual discharges of acid rock drainage.  At this site, MRRC spent approximately $0.6 million in 2011, $0.7 million in 2010 and $0.5 million in 2009, and estimates that it will spend between approximately $8.2 million and $11.5 million over the next 20 years.

Lead Refinery Site

U.S.S. Lead Refinery, Inc. (Lead Refinery), a non-operating wholly owned subsidiary of MRRC, has conducted corrective action and interim remedial activities and studies (collectively, Site Activities) at Lead Refinery’s East Chicago, Indiana site pursuant to the Resource Conservation and Recovery Act.  Site Activities, which began in December 1996, have been substantially concluded.  Lead Refinery is required to perform monitoring and maintenance activities with respect to Site Activities pursuant to a post-closure permit issued by the Indiana Department of Environmental Management (IDEM) effective as of January 22, 2008.  Lead Refinery spent approximately $0.1 million annually in 2011, 2010 and 2009 with respect to this site.  Approximate costs to comply with the post-closure permit, including associated general and administrative costs, are between $2.1 million and $3.3 million over the next 20 years.

On April 9, 2009, pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the U.S. Environmental Protection Agency (EPA) added the Lead Refinery site to the National Priorities List (NPL).  The NPL is a list of priority sites where the EPA has determined that there has been a release or threatened release of contaminants that warrant investigation and, if appropriate, remedial action.  The NPL does not assign liability to any party including the owner or operator of a property placed on the NPL.  The placement of a site on the NPL does not necessarily mean that remedial action must be taken.  On July 17, 2009, Lead Refinery received a written notice from the EPA that the agency is of the view that Lead Refinery may be a PRP under CERCLA in connection with the release or threat of release of hazardous substances including lead into a residential area adjacent to the site.  PRPs under CERCLA include current and former owners and operators of a site, persons who arranged for disposal or treatment of hazardous substances at a site, or persons who accepted hazardous substances for transport to a site.

The Company monitors EPA releases and periodically communicates with the EPA to inquire of the status of the Lead Refinery site.  As of December 31, 2011, the EPA has not conducted an investigation of the Lead Refinery site, proposed remedies, or informed Lead Refinery that it is a PRP at the Lead Refinery site.  Until the extent of remedial action is determined, the Company is unable to determine the likelihood of a material adverse outcome or the amount or range of a potential loss with respect to placement of this site on the NPL or in connection with the notice of potential liability concerning the residential area.  Lead Refinery lacks the financial resources needed to undertake any investigations or remedial action that may be required by the EPA pursuant to CERCLA.

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Operating Properties

Mueller Copper Tube Products, Inc.

In 1999, Mueller Copper Tube Products, Inc. (MCTP), a wholly owned subsidiary, commenced a cleanup and remediation of soil and groundwater at its Wynne, Arkansas plant.  MCTP is currently removing trichloroethylene, a cleaning solvent formerly used by MCTP, from the soil and groundwater.  On August 30, 2000, MCTP received approval of its Final Comprehensive Investigation Report and Storm Water Drainage Investigation Report addressing the treatment of soils and groundwater from the Arkansas Department of Environmental Quality (ADEQ).  The Company established a reserve for this project in connection with the acquisition of MCTP in 1998.  Effective November 17, 2008, MCTP entered into a Settlement Agreement and Administrative Order by Consent to submit a Supplemental Investigation Work Plan (SIWP) and subsequent Final Remediation Work Plan for the site.  By letter dated January 20, 2010, ADEQ approved the SIWP as submitted, with changes acceptable to the Company.  On December 16, 2011, MCTP entered into an amended Administrative Order by Consent to prepare and implement a revised Remediation Work Plan regarding final remediation for the Site.  Costs to implement the work plans, including associated general and administrative costs, are approximately $0.9 million over the next 10 years.

Belding, Michigan Lead Matters

In 2009 and 2010, in response to requests from the Michigan Department of Environmental Quality (MDEQ), Extruded Metals, Inc. (Extruded), a wholly owned subsidiary, conducted stack emissions testing of the stationary sources at its Belding, Michigan facility (the Belding Facility).  The results of tests on the West Chip Dryer showed non-compliance with certain emission limitations in the facility’s air use permit for that process, including the limitation for lead.  Modifications were made to the emissions control equipment on the West Chip Dryer, and subsequent testing demonstrated all stationary sources at the Belding Facility to be in compliance with the requirements of their air use permits.

In December 2009 and August 2010, the MDEQ issued a notice of violation and an enforcement notice with respect to the prior West Chip Dryer permit violations.  Extruded entered into an administrative consent order (ACO) with the MDEQ to resolve the allegations contained in the notices.  Under the ACO, the MDEQ imposed and Extruded has paid a civil fine in the amount of $176 thousand as part of the resolution of those allegations.  Extruded has satisfied all of its obligations under the ACO.

Ambient air monitoring conducted by the MDEQ downwind of the Belding Facility demonstrated periodic exceedances of the new National Ambient Air Quality Standards (NAAQS) for lead.  The MDEQ requested that Extruded submit an application for a new air use permit for the Belding Facility that would ensure compliance with that new federal standard.  The application was submitted to the MDEQ on January 21, 2011, and the new air permit was issued on October 20, 2011.  The permit requires Extruded to raise the stack height on the facility’s West Chip Dryer that is presently in operation, and on the East Chip Dryer that is presently not in operations, before it is returned to operation.  Extruded has raised the stack height on the West Chip Dryer, and has no present plans to return the East Chip Dryer to operation.

In October 2010, the MDEQ conducted testing of lead levels in soils on properties upwind and downwind of the Belding Facility.  Results of that testing showed exceedances of the Michigan generic residential direct contact cleanup criteria for lead on a number of the downwind properties.  Extruded has investigated the extent of this condition and performed remediation to the extent required by environmental laws and in accordance with a plan approved by the MDEQ in April 2011.  In January 2012, Extruded submitted a final Certification Report to the MDEQ documenting its completion of that remediation.  The Company provided $0.4 million in 2010 for this matter, and is pursuing potential remedies from the previous owner.  The Company does not expect additional material losses associated with these environmental matters.

9

In November 2010, Extruded received a request for information under Section 114(a) of the Clean Air Act from the EPA.  The focus of the EPA’s information request was the Belding Facility’s compliance with the National Emissions Standards for Hazardous Air Pollutants for Secondary Nonferrous Metals Processing Area Sources, 40 C.F.R. § 63.11462 (Subpart TTTTTT).  Extruded responded to the information request and advised the EPA of its position that it was not subject to regulation under Subpart TTTTTT.  The state has requested that Extruded request an applicability determination from the EPA.  The request has been made and Extruded is awaiting a response.

Health and Safety Matters

On January 25, 2010, the Company received Citations and a Notification of Penalties from the Occupational Safety and Health Administration (OSHA) proposing civil penalties totaling approximately $0.7 million for various health and safety violations following inspections in 2009 of certain plants operated by subsidiaries in Fulton, Mississippi.  In 2010, the Company executed a final agreement with OSHA and the penalties have been reduced to approximately $0.4 million.  The resolution of these matters did not have a material adverse effect on the Company’s financial condition, results of operations or cash flows.

Other Business Factors

The Registrant’s business is not materially dependent on patents, trademarks, licenses, franchises, or concessions held.  In addition, expenditures for company-sponsored research and development activities were not material during 2011, 2010, or 2009.  No material portion of the Registrant’s business involves governmental contracts.  Seasonality of the Company’s sales is not significant.

SEC Filings

We make available through our internet website our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act as soon as reasonably practicable after we electronically file such material with, or furnish it to, the Securities and Exchange Commission (SEC).  To retrieve any of this information, you may access our internet home page at www.muellerindustries.com, select Investors, and then select SEC Filings.

Reports filed with the SEC may also be viewed or obtained at the SEC Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549.  Information on the operation of the SEC Public Reference Room may be obtained by calling the SEC at 1-800-SEC-0330.  The SEC maintains a website that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC; the website address is www.sec.gov.

ITEM 1A. RISK FACTORS

The Company is exposed to risk as it operates its businesses.  To provide a framework to understand the operating environment of the Company, we are providing a brief explanation of the more significant risks associated with our businesses.  Although we have tried to identify and discuss key risk factors, others could emerge in the future.  These risk factors should be considered carefully when evaluating the Company and its businesses.

Increases in costs and the availability of energy and raw materials used in our products could impact our cost of goods sold and our distribution expenses, which could have a material adverse impact on our operating margins.

Both the costs of raw materials used in our manufactured products (copper, brass, zinc, aluminum, and PVC and ABS resins) and energy costs (electricity, natural gas and fuel) have been volatile during the last several years, which has resulted in changes in production and distribution costs.  For example, recent and pending climate change regulation and initiatives on the state, regional, federal, and international levels that have focused on reducing greenhouse gas (GHG) emissions from the energy and utility sectors may affect energy availability and costs in the near future.  While we typically attempt to pass costs through to our customers or to modify or adapt our activities to mitigate the impact of increases, we may not be able to do so successfully.  Failure to fully pass increases to our customers or to modify or adapt our activities to mitigate the impact could have a material adverse impact on our operating margins.  Additionally, if we are for any reason unable to obtain raw materials or energy, our ability to manufacture our finished goods would be impacted which could have a material adverse impact on our operating margins.

10

The unplanned departure of key personnel could disrupt our business.

We depend on the continued efforts of our senior management.  The unplanned loss of key personnel, or the inability to hire and retain qualified executives, could negatively impact our ability to manage our business.

Economic conditions in the housing and commercial construction industries as well as changes in interest rates could have a material adverse impact on our business, financial condition, and results of operations.

Our businesses are sensitive to changes in general economic conditions, including, in particular, conditions in the housing and commercial construction industries.  Prices for our products are affected by overall supply and demand in the market for our products and for our competitors’ products.  In particular, market prices of building products historically have been volatile and cyclical, and we may be unable to control the timing and amount of pricing changes for our products.  Prolonged periods of weak demand or excess supply in any of our businesses could negatively affect our revenues and margins and could result in a material adverse impact on our business, financial condition, and results of operations.

The markets that we serve, including, in particular, the housing and commercial construction industries, are significantly affected by movements in interest rates and the availability of credit.  Significantly higher interest rates could have a material adverse effect on our business, financial condition, and results of operations.  Our businesses are also affected by a variety of other factors beyond our control, including, but not limited to, employment levels, foreign currency exchange rates, unforeseen inflationary pressures, and consumer confidence.  Since we operate in a variety of geographic areas, our businesses are subject to the economic conditions in each such area.  General economic downturns or localized downturns in the regions where we have operations could have a material adverse effect on our business, financial condition, and results of operations.

Although conditions have stabilized during 2011, the deterioration of the general economic environment has had a significant negative impact on businesses and consumers around the world since the crisis began in 2008.  The well-publicized downturn in the construction markets, both residential and commercial, including construction lending, may result in protracted decreased demand for our products.  In addition, the impact of the economy on the operations or liquidity of any party with which we conduct our business, including our suppliers and customers, may adversely impact our business.

Competitive conditions including the impact of imports and substitute products and technologies could have a material adverse effect on the demand for our products as well as our margins and profitability.

The markets we serve are competitive across all product lines.  Some consolidation of customers has occurred and may continue, which could shift buying power to customers.  In some cases, customers have moved production to low-cost countries such as China, or sourced components from there, which has reduced demand in North America for some of the products we produce.  These conditions could have a material adverse impact on our ability to maintain margins and profitability.  The potential threat of imports and substitute products is based upon many factors including raw material prices, distribution costs, foreign exchange rates, production costs, and the development of emerging technologies and applications.  The end use of alternative import and/or substitute products could have a material adverse effect on our business, financial condition, and results of operations.  Likewise, the development of new technologies and applications could result in lower demand for our products and have a material adverse effect on our business.

11

Our exposure to exchange rate fluctuations on cross border transactions and the translation of local currency results into U.S. dollars could have an adverse impact on our results of operations or financial position.

We conduct our business through subsidiaries in several different countries and export our products to many countries.  Fluctuations in currency exchange rates could have a significant impact on the competitiveness of our products as well as the reported results of our operations, which are presented in U.S. dollars.  A significant and growing portion of our products are manufactured in, or acquired from suppliers located in, lower cost regions.  Cross border transactions, both with external parties and intercompany relationships, result in increased exposure to foreign exchange fluctuations.  The strengthening of the U.S. dollar could expose our U.S. based businesses to competitive threats from lower cost producers in other countries such as China.  Lastly, our sales are translated into U.S. dollars for reporting purposes.  The strengthening of the U.S. dollar could result in unfavorable translation effects when the results of foreign operations are translated into U.S. dollars.  Accordingly, significant changes in exchange rates, particularly the U.K. pound sterling, Mexican peso, and the Chinese renminbi, could have an adverse impact on our results of operations or financial position.

We are subject to claims, litigation, and regulatory proceedings that could have a material adverse effect on us.

We are, from time–to-time, involved in various claims, litigation matters, and regulatory proceedings.  These matters may include, among other things, contract disputes, personal injury claims, environmental claims, OSHA inspections or proceedings, other tort claims, employment and tax matters and other litigation including class actions that arise in the ordinary course of our business.  Although we intend to defend these matters vigorously, we cannot predict with certainty the outcome or effect of any claim or other litigation matter, and there can be no assurance as to the ultimate outcome of any litigation or regulatory proceeding.  Litigation and regulatory proceedings may have a material adverse effect on us because of potential adverse outcomes, defense costs, the diversion of our management’s resources, availability of insurance coverage and other factors.

A strike, other work stoppage or business interruption, or our inability to renew collective bargaining agreements on favorable terms, could impact our cost structure and our ability to operate our facilities and produce our products, which could have an adverse effect on our results of operations.

As of December 31, 2011, approximately 1,975 of our 3,750 employees were covered by collective bargaining or similar agreements.  If we are unable to negotiate acceptable new agreements with the unions representing our employees upon expiration of existing contracts, we could experience strikes or other work stoppages.  Strikes or other work stoppages could cause a significant disruption of operations at our facilities, which could have an adverse impact on us.  New or renewal agreements with unions representing our employees could call for higher wages or benefits paid to union members, which would increase our operating costs and could adversely affect our profitability.  Higher costs and/or limitations on our ability to operate our facilities and produce our products resulting from increased labor costs, strikes or other work stoppages could have a material adverse effect on our results of operations.

In addition, unexpected interruptions in our operations or those of our customers or suppliers due to such causes as weather-related events or acts of God, such as earthquakes, could have an adverse effect on our results of operations.  For example, the EPA has recently found that global climate change would be expected to increase the severity and possibly the frequency of severe weather patterns such as hurricanes.  Although the financial impact of such is not reasonably estimable at this time, should such occur, our operations in certain coastal and flood-prone areas or operations of our customers and suppliers could be adversely affected.  As a result of a fire at our Wynne, Arkansas, location, our copper tube casting operations were destroyed and consequently our redundant casting capacity is no longer available.  If our remaining copper tube casting operations were to become inoperable, for any reason, our domestic copper tube production could be significantly impaired and have a material adverse effect on our results of operations.

12

We are subject to environmental and health and safety laws and regulations and future compliance may have a material adverse effect on our results of operations, financial position, or cash flows.

The nature of our operations exposes us to the risk of liabilities and claims with respect to environmental matters and health and safety matters.  While we have established accruals intended to cover the cost of environmental remediation at contaminated sites, the actual cost is difficult to determine and may exceed our estimated reserves.  Further, changes to, or more rigorous enforcement or stringent interpretation of environmental or health and safety laws could require significant incremental costs to maintain compliance.  Recent and pending climate change regulation and initiatives on the state, regional, federal, and international levels may require certain of our facilities to reduce GHG emissions.  While not reasonably estimable at this time, this could require capital expenditures for environmental control facilities and/or the purchase of GHG emissions credits in the coming years.  In addition, with respect to environmental matters, future claims may be asserted against us for, among other things, past acts or omissions at locations operated by predecessor entities, or alleging damage or injury or seeking other relief in connection with environmental matters associated with our operations.  Future liabilities, claims and compliance costs may have a material adverse effect on us because of potential adverse outcomes, defense costs, the diversion of our management's resources, availability of insurance coverage and other factors.  The overall impact of these requirements on our operations could increase our costs and diminish our ability to compete with products that are produced in countries without such rigorous standards; the long run impact could negatively impact our results and have a material adverse effect on our business.

ITEM 1B.  UNRESOLVED STAFF COMMENTS

None.

13

ITEM 2.  PROPERTIES

Information pertaining to the Registrant’s major operating facilities is included below.  Except as noted, the Registrant owns all of its principal properties.  The Registrant’s plants are in satisfactory condition and are suitable for the purpose for which they were designed and are now being used.

Location		Approximate Property Size		Description
Plumbing & Refrigeration Segment
	Fulton, MS	418,000 sq. ft. 52.37 acres		Copper tube mill.  Facility includes casting, extruding, and finishing equipment to produce copper tube, including tube feedstock for the Company’s copper fittings plants and Precision Tube factory.
	Fulton, MS	103,000 sq. ft. 11.9 acres		Casting facility.  Facility includes casting equipment to produce copper billets used in the adjoining copper tube mill.
	Wynne, AR	400,000 sq. ft. 39.2 acres	(1) (2)	Copper tube mill.  Facility includes extrusion and finishing equipment to produce copper tube and line sets.
	Fulton, MS	58,500 sq. ft. 15.53 acres		Packaging and bar coding facility for retail channel sales.
	Fulton, MS	70,000 sq. ft. 7.68 acres	(3)	Copper fittings plant.  High-volume facility that produces copper fittings using tube feedstock from the Company’s adjacent copper tube mill.
	Covington, TN	159,500 sq. ft. 40.88 acres		Copper fittings plant.  Facility produces copper fittings using tube feedstock from the Company’s copper tube mills.
	Ontario, CA	211,000 sq. ft.	(4)	Distribution center and plastics manufacturing plant.  Produces DWV fittings using injection molding equipment and ABS plastic pipe using pipe extruders.
	Fort Pierce, FL	69,875 sq. ft. 5.60 acres		Plastic fittings plant.  Produces DWV and pressure fittings using injection molding equipment.
	Monterrey, Mexico	152,000 sq. ft.	(4)	Pipe nipples plant.  Produces pipe nipples, cut pipe and merchant couplings.
	Bilston, England, United Kingdom	402,500 sq. ft. 14.95 acres		Copper tube mill.  Facility includes casting, extruding, and finishing equipment to produce copper tube.
	Phoenix, AZ	26,000 sq. ft.	(4)	Line sets plant.  Produces standard and custom-made line sets for HVAC markets.
	Atlanta, GA	24,000 sq. ft.	(4)	Line sets plant.  Produces standard and custom-made line sets for HVAC markets.

(continued)

14

ITEM 2.  PROPERTIES

(continued)
	Location	Approximate Property Size		Description
OEM Segment
	Port Huron, MI	322,500 sq. ft. 71.5 acres		Brass rod mill.  Facility includes casting, extruding, and finishing equipment to produce brass rods and bars, in various shapes and sizes.
	Belding, MI	293,068 sq. ft. 17.64 acres		Brass rod mill.  Facility includes casting, extruding, and finishing equipment to produce brass rods and bars, in various shapes and sizes.
	Port Huron, MI	127,500 sq. ft.		Forgings plant.  Produces brass and aluminum forgings.
	Marysville, MI	81,500 sq. ft. 6.72 acres		Aluminum and copper impacts plant.  Produces made-to-order parts using cold impact processes.
	Hartsville, TN	78,000 sq. ft. 4.51 acres		Refrigeration products plant.  Produces products used in refrigeration applications such as ball valves, line valves, and compressor valves.
	Carthage, TN	67,520 sq. ft. 10.98 acres		Fabrication facility.  Produces precision tubular components and assemblies.
	Waynesboro, TN	57,000 sq. ft. 5.0 acres	(5)	Gas valve plant.  Facility produces brass and aluminum valves and assemblies for the gas appliance industry.
	North Wales, PA	174,000 sq. ft. 18.9 acres		Precision Tube factory.  Facility fabricates copper tube, copper alloy tube, aluminum tube, and fabricated tubular products.
	Brighton, MI	65,000  sq. ft.	(4)	Machining operation.  Facility machines component parts for supply to automotive industry.
	Middletown, OH	55,000 sq. ft. 2.0 acres		Fabricating facility.  Produces burner systems and manifolds for the gas appliance industry.
	Jintan City, Jiangsu Province, China	322,580  sq. ft. 33.0 acres	(6)	Copper tube mill.  Facility includes casting, and finishing equipment to produce engineered copper tube primarily for OEMs.
	Xinbei District, Changzhou, China	33,940 sq. ft.	(4)	Refrigeration products plant.  Produces products used in refrigeration applications such as ball valves, line valves, and compressor valves.
	Carrollton, TX	166,000 sq. ft.	(4)	Fabrication facility.  Produces tubular components, assemblies, and return bends for refrigeration and HVAC markets.

In addition, the Company owns and/or leases other properties used as distribution centers and corporate offices.

(1)   Facility, or some portion thereof, is located on land leased from a local municipality, with an option to purchase at nominal cost.

(2)   In September 2011, plastic fittings and line sets production capacity was extensively damaged, as well as certain portions of building structures.  The damaged property was excluded from this location.

(3)   Facility is leased under a long-term lease agreement, with an option to purchase at nominal cost.

(4)   Facility is leased under an operating lease.

(5)   Facility is leased from a local municipality for a nominal amount.

(6)   Facility is located on land that is under a long-term land use rights agreement.

15

ITEM 3. LEGAL PROCEEDINGS

General

The Company is involved in certain litigation as a result of claims that arose in the ordinary course of business.  Additionally, the Company may realize the benefit of certain legal claims and litigation in the future; these gain contingencies are not recognized in the Condensed Consolidated Financial Statements.

Environmental Proceedings

Reference is made to “Environmental Matters” in Item 1 of this Report, which is incorporated herein by reference, for a description of environmental proceedings.

Carrier ACR Tube Action

The Company has been named as a defendant in a pending litigation (the Carrier ACR Tube Action) brought by Carrier Corporation, Carrier S.A., and Carrier Italia S.p.A. (collectively, Carrier), direct purchasers of copper tube.  The Carrier ACR Tube Action was filed in March 2006 in the United States District Court for the Western District of Tennessee.  The Carrier ACR Tube Action alleges anticompetitive activities with respect to the sale of copper tube used in, among other things, the manufacturing of air-conditioning and refrigeration units.  The Company and Mueller Europe, Limited (Mueller Europe) are named in the Carrier ACR Tube Action.  The Carrier ACR Tube Action seeks monetary and other relief.

In July 2007, the Carrier ACR Tube Action was dismissed in its entirety for lack of subject matter jurisdiction as to all defendants.  In August 2007, plaintiffs filed with the United States Court of Appeals for the Sixth Circuit a notice of appeal from the judgment and order dismissing the complaint in the Carrier ACR Tube Action.  The Company and Mueller Europe filed notices of cross-appeal in August 2007.

In October 2007, Carrier filed with the United States Court of Appeals for the Sixth Circuit a motion to dismiss the cross-appeals, which the Court denied in December 2007.  Briefing on the appeals occurred in May 2009 and oral argument took place in October 2009.

Pursuant to stipulations of dismissal, the Court dismissed the Company’s and Mueller Europe’s cross-appeals against Carrier, and Carrier’s appeal as against the Company and Mueller Europe, in November 2011.  This matter is now resolved.

Canadian Dumping and Countervail Investigation

In June 2006, the Canada Border Services Agency (CBSA) initiated an investigation into the alleged dumping of certain copper pipe fittings from the United States and from South Korea, and the dumping and subsidizing of these same goods from China.  The Company and certain affiliated companies were identified by the CBSA as exporters and importers of these goods.

On January 18, 2007, the CBSA issued a final determination in its investigation.  The Company was found to have dumped subject goods during the CBSA’s investigation period.  On February 19, 2007, the Canadian International Trade Tribunal (CITT) concluded that the dumping of the subject goods from the United States had caused injury to the Canadian industry.

As a result of these findings, exports of subject goods to Canada by the Company made on or after October 20, 2006, have been subject to antidumping measures.  Under Canada’s system of prospective antidumping enforcement, the CBSA has issued normal values to the Company.  Antidumping duties will be imposed on the Company only to the extent that the Company’s future exports of copper pipe fittings are made at net export prices, which are below these normal values.  If net export prices for subject goods exceed normal values, no antidumping duties will be payable.  These measures will remain in place for five years, at which time an expiry review will be conducted by Canadian authorities to determine whether these measures should be maintained for another five years or allowed to expire.

16

On April 8, 2011, CBSA completed a review process pursuant to which revised normal values were issued to exporters of subject goods, including the Company.  In any event, given the small percentage of its products that are sold for export to Canada, the Company does not anticipate any material adverse effect on its financial position, results of operations or cash flows as a result of the antidumping case in Canada.

The “sunset review” process, pursuant to which Canadian authorities examined whether the dumping order should be revoked or maintained for another five years, was initiated on April 12, 2011.  The results of the sunset review process were issued on February 17, 2012, and resulted in the dumping order being maintained for another five years.

United States Department of Commerce Antidumping Review

On December 24, 2008, the United States Department of Commerce (DOC) initiated an antidumping administrative review of the antidumping duty order covering circular welded non-alloy steel pipe and tube from Mexico to determine the final antidumping duties owed on U.S. imports during the period November 1, 2007, through October 31, 2008, by certain subsidiaries of the Company.  On April 19, 2010, the DOC published the final results of this review and assigned Mueller Comercial de Mexico, S. de R.L. de C.V. (Mueller Comercial) an antidumping duty rate of 48.3 percent.  The Company has appealed the final determination to the U.S. Court of International Trade (CIT).  On December 16, 2011, the CIT issued a decision to remand the final results back to DOC to reconsider its decision.  DOC is ordered to file its remand results with the CIT by April 16, 2012.  The Company anticipates that certain of its subsidiaries will incur antidumping duties on subject imports made during the period of review and, as such, established a reserve of approximately $4.2 million for this matter.

On December 23, 2009, the DOC initiated an antidumping administrative review of the antidumping duty order covering circular welded non-alloy steel pipe and tube from Mexico for the November 1, 2008, through October 31, 2009, period of review.  The DOC selected Mueller Comercial as a respondent for this period of review.  On June 21, 2011, the DOC published the final results of this review and assigned Mueller Comercial an antidumping duty rate of 19.8 percent.  On August 22, 2011, the Company appealed the final results to the CIT.  The Company anticipates that certain of its subsidiaries will incur antidumping duties on subject imports made during the period of review and, as such, established a reserve of approximately $1.0 million for this matter.

On December 28, 2010, the DOC initiated an antidumping administrative review of the antidumping duty order covering circular welded non-alloy steel pipe and tube from Mexico for the November 1, 2009, through October 31, 2010, period of review.  The DOC selected Mueller Comercial as a respondent for this period of review.  In August 2011, the DOC issued a preliminary determination to rescind the review based on a finding that Mueller Comercial did not ship subject merchandise to the United States during the relevant period of review.  By the end of the year, the DOC should issue a final determination which, if the result mirrors the preliminary determination, would result in zero antidumping liability for the Company and its subsidiaries for imports made during the period of review.  Until the final determination is issued, however, the Company cannot estimate the impact, if any, that this matter will have on its financial position, results of operations, or cash flows.

United States Department of Commerce and United States International Trade Commission Antidumping Investigations

On September 30, 2009, two subsidiaries of the Company, along with Cerro Flow Products, Inc. and KobeWieland Copper Products LLC (collectively, Petitioners), jointly filed antidumping petitions with the DOC and the U.S. International Trade Commission (ITC) alleging that imports of seamless refined copper pipe and tube from China and Mexico (subject imports) were being sold at less than fair value and were causing material injury (and threatening material injury) to the domestic industry.  On October 1, 2010, the DOC published its final affirmative determinations, finding antidumping rates from 24.89 percent to 27.16 percent for Mexico (as amended), and from 11.25 percent to 60.85 percent for China.

17

On November 22, 2010, the ITC issued its final affirmative determination that subject imports from China and Mexico threatened material injury to the domestic industry.  Also on November 22, 2010, the DOC published antidumping orders, with the effect that importers were required to post antidumping cash deposits at rates ranging from 24.89 percent to 27.16 percent (for subject imports from Mexico) and from 11.25 percent to 60.85 percent (for subject imports from China).

On December 22, 2010, certain Mexican parties requested panel reviews under the North American Free Trade Agreement (NAFTA) in order to appeal the ITC final determination as to Mexico.  Following a period of litigation, the last of the Mexican parties withdrew its allegations on December 8, 2011, with the effect that the ITC final determination as to Mexico shall remain in force.

On July 7, 2011, the DOC initiated a new shipper review of certain entries from a Mexican processor of copper tube, GD Affiliates S.de R.L. de C.V., in order to establish a company-specific dumping rate for this company based on the period November 22, 2010 through April 30, 2011.  The review is expected to be completed sometime in 2012.  At this time, the Company is unable to know the final disposition of the review.

On December 31, 2011, the DOC initiated administrative reviews of several Chinese and Mexican copper tube producers and/or exporters to the United States — including  IUSA, S.A. de C.V. (Mexico), GD Affiliates S. de R.L. de C.V. (Mexico), Hong Kong GD Trading Co., Ltd. (Mexico), Nacional de Cobre, S.A. de C.V. (Mexico), Golden Dragon Holding Hong Kong International Co., Ltd. (China), Golden Dragon Precise Copper Tube Group, Inc. (China), Hong Kong GD Trading Co., Ltd. (China), Hong Kong Hailiang Metal Trading Limited (China), Luvata Alltop Zhongshan Ltd. (China), Luvata Tube Zhongshan Ltd. (China), Ningbo Jintian Copper Tube Co., Ltd. (China), Shanghai Hailiang Copper Co., Ltd. (China), Sinochem Ningbo Import & Export Co., Ltd. (China), Sinochem Ningbo Ltd. (China), Zhejiang Hailiang Co., Ltd. (China), Zhejiang Jiahe Pipes Inc. (China), and Zhejiang Naile Copper Co., Ltd. (China) — in order to establish company-specific dumping rates based on the period November 22, 2010 through October 31, 2011.  On February 22, 2012, the DOC rescinded its review of IUSA, S.A. de C.V. (Mexico).  The reviews are expected to be completed sometime in 2013.  At this time, the Company is unable to know the final disposition of these reviews.

Supplier Litigation

On May 6, 2011, the Company and two of its subsidiaries, Mueller Streamline Co. (Mueller Streamline) and B&K Industries, Inc. (B&K), filed a lawsuit in federal district court in Los Angeles, California against a former supplier, Xiamen Lota International Co., Ltd (Xiamen Lota), its U.S. sales representative (Lota USA), and certain other persons.  The lawsuit alleges that the defendants gave Peter D. Berkman, a former executive of the Company and B&K, an undisclosed interest in Lota USA, and made payments and promises of payment to him, in return for Peter Berkman maintaining the Company as a customer, increasing purchasing levels, and acquiescing to excessive pricing for Xiamen Lota products.  The lawsuit alleges violations of 18 U.S.C. §§ 1962(c) and (d) and state law unfair competition.  The lawsuit seeks compensatory, treble and punitive damages, and other appropriate relief.  All of the foreign defendants have been served under the Hague Convention and Xiamen Lota has withdrawn its motion contesting service of process (filed July 1, 2011).  On January 4, 2012, the foreign defendants filed a motion to dismiss the Company’s complaint for failure to state a claim, and also joined in Lota USA’s pending motion to dismiss (filed July 1, 2011).  Both motions to dismiss are scheduled to be heard on April 9, 2012.  On December 16, 2011, the Court granted Lota USA’s motion to disqualify the Company’s counsel and the Company has retained new counsel to represent it going forward in the lawsuit.  The Company believes that a material loss resulting from this litigation is remote.

On August 2, 2011, Xiamen Lota, and Lota Corp. filed suit in federal district court in Memphis, Tennessee against Mueller Industries, Inc. and Mueller Streamline (collectively Mueller).  This matter involves allegations of breach of contract and unjust enrichment arising out of dealing pursuant to which Xiamen Lota supplied Mueller with plumbing products.  The complaint seeks compensatory damages, pre-judgment interest, and other equitable relief.  Mueller intends to vigorously defend this action.  In this regard, Mueller has counterclaimed for breach of contract, breach of warranty and misrepresentation.  The Company believes that a material loss resulting from this litigation is remote.

18

On September 30, 2011, a lawsuit was filed in federal district court in Chicago, Illinois, against B&K, by  Xiamen Lota, and two of its employees, Yongqiang He (He) and Chuanbao Zhu (Zhu).  The lawsuit alleges that B&K, a subsidiary of the Company, failed to name He as an inventor on three United States patents, U.S. patent nos. 6,880,573 ('573 Patent), 7,140,390 ('390 Patent), and 7,549,444 ('444 Patent) awarded to employees of B&K, and subsequently assigned to B&K.  The '573 Patent, '390 Patent and '444 Patent pertain to frost-free valve assemblies sold by B&K.  The lawsuit also alleges that B&K failed to name Zhu as an inventor on the '390 Patent.  According to the complaint, He and Zhu have assigned any rights they might have in the three patents to Xiamen Lota.  The claims in the lawsuit include correction of inventorship (Counts I-VI), unjust enrichment (Count VII), and tortious interference with prospective economic advantage (Count VIII), and seek unspecified damages from B&K.  The Company has answered Counts I-VI, denying all substantive allegations, and has asserted affirmative defenses.  The Company has moved to dismiss Counts VII and VIII.  The Company's motion to dismiss Counts VII and VIII remains pending.  The Company believes that a material loss resulting from this litigation is remote.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

19

PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

As of February 24, 2012, the number of holders of record of Mueller’s common stock was approximately 1,100.  On February 24, 2012, the closing price for Mueller’s common stock on the New York Stock Exchange was $46.79.

Issuer Purchases of Equity Securities

The Company’s Board of Directors has extended, until October 2012, the authorization to repurchase up to ten million shares of the Company’s common stock through open market transactions or through privately negotiated transactions.  The Company has no obligation to purchase any shares and may cancel, suspend, or extend the time period for the purchase of shares at any time.  Any purchases will be funded primarily through existing cash and cash from operations.  The Company may hold any shares purchased in treasury or use a portion of the repurchased shares for its stock-based compensation plans, as well as for other corporate purposes.  From its initial authorization in 1999 through December 31, 2011, the Company had repurchased approximately 2.4 million shares under this authorization.  Below is a summary of the Company’s stock repurchases for the period ended December 31, 2011.

	(a)			(b)			(c)	(d)
	Total Number of Shares Purchased			Average Price Paid per Share			Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number of Shares That May Yet Be Purchased Under the Plans or Programs
									7,647,030	(1)
October 2 – October 29, 2011		19,255	(2)		$	42.72
October 30 – November 26, 2011		1,698	(2)			38.06
November 27 – December 31, 2011		—				—

(1	)	Shares available to be purchased under the Company's ten million share repurchase authorization until October 2012. The extension of the authorization was announced on October 27, 2011.
(2	)	Shares tendered to the Company by holders of stock based awards in payment of purchase price and/or withholding taxes upon exercise.

The Company’s Board of Directors declared a regular quarterly dividend of 10 cents per share on its common stock for each fiscal quarter of 2011 and 2010.  Payment of dividends in the future is dependent upon the Company’s financial condition, cash flows, capital requirements, earnings, and other factors.

20

The high, low, and closing prices of Mueller's common stock on the New York Stock Exchange for each fiscal quarter of 2011 and 2010 were as follows:

	High		Low		Close
2011
Fourth quarter	$	46.33	$	35.51	$	38.42
Third quarter		47.72		36.14		38.59
Second quarter		40.13		34.60		38.47
First quarter		37.32		31.08		36.95
2010
Fourth quarter	$	33.86	$	25.23	$	33.04
Third quarter		26.29		23.10		25.90
Second quarter		31.20		23.92		24.75
First quarter		26.62		21.88		25.96

21

PERFORMANCE GRAPH

The following table compares total stockholder return since December 30, 2006 to the Dow Jones U.S. Total Market Index (Total Market Index) and the Dow Jones U.S. Building Materials & Fixtures Index (Building Materials Index).  Total return values for the Total Market Index, the Building Materials Index and the Company were calculated based on cumulative total return values assuming reinvestment of dividends.  The common stock is traded on the New York Stock Exchange under the symbol MLI.

	2006	2007	2008	2009	2010	2011
Mueller Industries, Inc.	100	94	74	84	111	130
Dow Jones U.S. Total Market Index	100	107	64	87	100	101
Dow Jones U.S. Building Materials & Fixtures Index	100	96	64	76	87	89

22

ITEM 6. SELECTED FINANCIAL DATA

(In thousands, except per share data)		2011			2010			2009			2008			2007
For the fiscal year: (1)
	Net sales	$	2,417,797		$	2,059,797		$	1,547,225		$	2,558,448		$	2,697,845
	Operating income		139,802	(2)		136,147	(3)		32,220	(4)		126,096	(5)		191,621	(7)
	Net income attributable to Mueller Industries, Inc.		86,321			86,171			4,675			80,814	(6)		115,475
	Diluted earnings per share		2.26			2.28			0.12			2.17			3.10
	Cash dividends per share		0.40			0.40			0.40			0.40			0.40
At year-end:
	Total assets		1,347,604			1,258,996			1,180,141			1,182,913			1,449,204
	Long-term debt		156,476			158,226			158,226			158,726			281,738

(1)	Includes activity of acquired businesses from the following purchase dates: Tube Forming L.P., December 28, 2010, Linesets, Inc., August 6, 2010, and Extruded, February 27, 2007.
(2)	Includes $10.5 million gain from settlement of litigation.
(3)	Includes $22.7 million gain from settlement of insurance claims.
(4)	Includes impairment charges of $29.8 million, primarily related to goodwill.
(5)	Includes $14.9 million pre-tax gain from liquidation of LIFO layers less a pre-tax charge of $4.9 million to write down inventories to the lower-of-cost-or-market and a goodwill impairment charge of $18.0 million.
(6)	Includes the net-of-tax effect of all of the items described in (4) above, plus a provision of $15.4 million ($9.6 million after tax) related to environmental settlements and obligations and a gain of $21.6 million related to the early extinguishment of debt.
(7)	Includes $10.0 million pre-tax gain from liquidation of LIFO layers plus a gain from a copper litigation settlement of $8.9 million, less a goodwill impairment charge of $2.8 million.

23

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Management’s discussion and analysis of financial condition and results of operations is contained under the caption “Financial Review” submitted as a separate section of this Annual Report on Form 10-K commencing on page F-2.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Quantitative and qualitative disclosures about market risk are contained under the caption “Financial Review” submitted as a separate section of this Annual Report on Form 10-K commencing on page F-2.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Financial Statements required by this item are contained in a separate section of this Annual Report on Form 10-K commencing on page F-1.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

The Company maintains disclosure controls and procedures designed to ensure information required to be disclosed in Company reports filed under the Securities Exchange Act of 1934, as amended (the Exchange Act), is recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms.  Disclosure controls and procedures are designed to provide reasonable assurance that information required to be disclosed in Company reports filed under the Exchange Act is accumulated and communicated to management, including the Company’s Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

The Company's management, with the participation of the Company's Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the Company's disclosure controls and procedures pursuant to Rule 13a-15(e) of the Exchange Act as of December 31, 2011.  Based on that evaluation, the Company's Chief Executive Officer and Chief Financial Officer have concluded that the Company's disclosure controls and procedures are effective as of December 31, 2011 to ensure that information required to be disclosed in Company reports filed under the Exchange Act is (i) recorded, processed, summarized and reported within the time periods specified in the SEC rules and forms and (ii) accumulated and communicated to management, including the Company's principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

24

Management’s Report on Internal Control over Financial Reporting

The Company's management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) under the Securities Exchange Act of 1934.  Pursuant to the rules and regulations of the SEC, internal control over financial reporting is a process designed by, or under the supervision of, the Company’s principal executive and principal financial officers, and effected by the Company’s board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States and includes those policies and procedures that (i) pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of the  Company’s assets; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the issuer are being made only in accordance with authorizations of the Company’s management and directors; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company’s assets that could have a material effect on the financial statements.  Due to inherent limitations, internal control over financial reporting may not prevent or detect misstatements.  Further, because of changes in conditions, effectiveness of internal control over financial reporting may vary over time.

The Company's management, with the participation of the Company's Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the Company's internal control over financial reporting as of December 31, 2011 based on the control criteria established in a report entitled Internal Control—Integrated Framework, issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).  Based on such evaluation management has concluded that our internal control over financial reporting is effective as of December 31, 2011.

Ernst & Young LLP, the independent registered public accounting firm that audited the Company’s financial statements included in this Annual Report on Form 10-K, has issued an attestation report on the Company’s internal control over financial reporting, which is included herein.

Changes in Internal Control over Financial Reporting

There were no changes in the Company’s internal control over financial reporting during the Company’s fiscal quarter ended December 31, 2011, that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

25

Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of Mueller Industries, Inc.

We have audited Mueller Industries, Inc.’s internal control over financial reporting as of December 31, 2011, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). Mueller Industries, Inc.’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements.  Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, Mueller Industries, Inc. maintained, in all material respects, effective internal control over financial reporting as of December 31, 2011, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of Mueller Industries, Inc. as of December 31, 2011 and December 25, 2010, and the related consolidated statements of income, changes in equity and cash flows for each of the three years in the period ended December 31, 2011 and our report dated February 28, 2012 expressed an unqualified opinion thereon.

	/S/ Ernst & Young LLP
Memphis, Tennessee
February 28, 2012

26

ITEM 9B. OTHER INFORMATION

None.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS, AND CORPORATE GOVERNANCE

The information required by Item 10 is contained under the captions “Ownership of Common Stock by Directors and Executive Officers and Information about Director Nominees,” “Corporate Governance,” “Report of the Audit Committee of the Board of Directors,” and “Section 16(a) Beneficial Ownership Compliance Reporting” in the Company’s Proxy Statement for its 2012 Annual Meeting of Stockholders to be filed with the SEC on or about March 21, 2012, which is incorporated herein by reference.

The Company intends to disclose any amendments to its Code of Business Conduct and Ethics by posting such information to the Company’s website at www.muellerindustries.com.

ITEM 11. EXECUTIVE COMPENSATION

The information required by Item 11 is contained under the caption “Compensation Discussion and Analysis,” “Summary Compensation Table for 2011,” “2011 Grants of Plan Based Awards Table,” “Outstanding Equity Awards at Fiscal 2011 Year-End,” “2011 Option Exercises and Stock Vested,” “Employment and Consulting Agreements,” “Potential Payments Under Employment and Consulting Agreements as of the End of 2011,” “2011 Director Compensation,” “Report of the Compensation Committee of the Board of Directors on Executive Compensation” and “Corporate Governance” in the Company’s Proxy Statement for its 2012 Annual Meeting of Stockholders to be filed with the SEC on or about March 21, 2012, which is incorporated herein by reference.

27

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

Equity Compensation Plan Information

The following table discloses information regarding the securities to be issued and the securities remaining available for issuance under the Registrant’s stock-based incentive plans as of December 31, 2011 (shares in thousands):

	(a)		(b)	(c)
Plan category	Number of securities to be issued upon exercise of outstanding options, warrants, and rights		Weighted average exercise price of outstanding options, warrants, and rights	Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
Equity compensation plans approved by security holders	1,231	$	28.07	746	(1)
Equity compensation plans not approved by security holders	—		—	—
Total	1,231	$	28.07	746
(1) Of the 746 thousand securities remaining available for issuance under the equity compensation plans, 457 thousand are available under the Company’s 2009 Stock Incentive Plan for issuance of restricted stock, stock appreciation rights, or stock options.  The remaining securities are available for issuance of stock options only.

Other information required by Item 12 is contained under the captions “Principal Stockholders” and “Ownership of Common Stock by Directors and Executive Officers and Information about Director Nominees” in the Company’s Proxy Statement for its 2012 Annual Meeting of Stockholders to be filed with the SEC on or about March 21, 2012, which is incorporated herein by reference.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The information required by Item 13 is contained under the caption “Corporate Governance” in the Company’s Proxy Statement for its 2012 Annual Meeting of Stockholders to be filed with the SEC on or about March 21, 2012, which is incorporated herein by reference.

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ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by Item 14 is contained under the caption “Appointment of Independent Registered Public Accounting Firm” in the Company’s Proxy Statement for its 2012 Annual Meeting of Stockholders to be filed with the SEC on or about March 21, 2012, which is incorporated herein by reference.

PART IV

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a)	The following documents are filed as part of this report:
1.	Financial Statements: the financial statements, notes, and report of independent registered public accounting firm described in Item 8 of this Annual Report on Form 10-K are contained in a separate section of this Annual Report on Form 10-K commencing on page F-1.
2.	Financial Statement Schedule: the financial statement schedule described in Item 8 of this report is contained in a separate section of this Annual Report on Form 10-K commencing on page F-1.
3.	Exhibits:
	3.1	Restated Certificate of Incorporation of the Registrant dated February 8, 2007 (Incorporated herein by reference to Exhibit 3.1 of the Registrant’s Annual Report on Form 10-K, dated February 28, 2007, for the fiscal year ended December 30, 2006).
	3.2	Amended and Restated By-laws of the Registrant, effective as of January 1, 2012 (Incorporated herein by reference to Exhibit 3.1 of the Registrant’s Current Report on Form 8-K, dated November 3, 2011).
	4.1	Indenture, dated as of October 26, 2004, by and between Mueller Industries, Inc., and SunTrust Bank, as trustee (Incorporated herein by reference to Exhibit 4.1 of the Registrant’s Current Report on Form 8-K, dated October 26, 2004).
	4.2	Form of 6% Subordinated Debenture due 2014 (Incorporated herein by reference to Exhibit 4.2 of the Registrant’s Current Report on Form 8-K, dated October 26, 2004).
	4.3	Certain instruments with respect to long-term debt of the Registrant have not been filed as Exhibits to this Report since the total amount of securities authorized under any such instruments does not exceed 10 percent of the total assets of the Registrant and its subsidiaries on a consolidated basis.  The Registrant agrees to furnish a copy of each such instrument upon request of the SEC.
	10.1	Amended and Restated Employment Agreement, effective as of September 17, 1997, by and between the Registrant and Harvey L. Karp (Incorporated herein by reference to Exhibit 10.8 of the Registrant’s Annual Report on Form 10-K, dated March 24, 2003, for the fiscal year ended December 28, 2002).
	10.2	Amendment, dated June 21, 2004, to the Amended and Restated Employment Agreement dated as of September 17, 1997, by and between the Registrant and Harvey Karp (Incorporated herein by reference to Exhibit 10.3 of the Registrant’s Quarterly Report on Form 10-Q, for the quarter ended June 26, 2004, dated July 16, 2004).

29

10.3	Second Amendment, dated February 17, 2005, to the Amended and Restated Employment Agreement, dated as of September 17, 1997, between the Registrant and Harvey Karp (Incorporated herein by reference to Exhibit 10.2 of the Registrant’s Current Report on Form 8-K, dated May 5, 2005).
10.4	Third Amendment, dated October 25, 2007, to the Amended and Restated Employment Agreement, dated as of September 17, 1997, by and between the Registrant and Harvey Karp (Incorporated herein by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K, dated October 25, 2007).
10.5	Fourth Amendment, dated December 2, 2008, to the Amended and Restated Employment Agreement, dated as of September 17, 1997, by and between the Registrant and Harvey Karp (Incorporated herein by reference to Exhibit 10.5 of the Registrant’s Annual Report on Form 10-K, dated February 24, 2009, for the fiscal year ended December 27, 2008).
10.6	Amended and Restated Consulting Agreement, dated October 25, 2007, by and between the Registrant and Harvey Karp (Incorporated herein by reference to Exhibit 10.2 of the Registrant’s Current Report on Form 8-K, dated October 25, 2007).
10.7	Amendment No. 1, dated December 2, 2008, to the Amended and Restated Consulting Agreement, dated October 25, 2007, by and between the Registrant and Harvey Karp (Incorporated herein by reference to Exhibit 10.7 of the Registrant’s Annual Report on Form 10-K, dated February 24, 2009, for the fiscal year ended December 27, 2008).
10.8	Letter Agreement with Harvey Karp, dated as of May 11, 2011 (Incorporated herein by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K, dated May 16, 2011).
10.9	Employment Agreement, effective October 17, 2002, by and between the Registrant and Kent A. McKee (Incorporated herein by reference to Exhibit 10.18 of the Registrant’s Annual Report on Form 10-K, dated March 24, 2003, for the fiscal year ended December 28, 2002).
10.10	Amendment No. 1, dated December 10, 2008, to the Employment Agreement, effective October 17, 2002, by and between the Registrant and Kent A. McKee (Incorporated herein by reference to Exhibit 10.16 of the Registrant’s Annual Report on Form 10-K, dated February 24, 2009, for the fiscal year ended December 27, 2008).
10.11	Amended and Restated Employment Agreement, effective October 30, 2008, by and between the Registrant and Gregory L. Christopher (Incorporated herein by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K, dated December 26, 2008).
10.12	Mueller Industries, Inc. 1994 Non-Employee Director Stock Option Plan, as amended (Incorporated herein by reference to Exhibit 10.12 of the Registrant’s Annual Report on Form 10-K, dated March 24, 2003, for the fiscal year ended December 28, 2002 and Exhibit 99.6 of the Registrant’s Current Report on Form 8-K, dated August 31, 2004).
10.13	Mueller Industries, Inc. 1998 Stock Option Plan, as amended (Incorporated herein by reference to Exhibit 10.14 of the Registrant’s Annual Report on Form 10-K, dated March 24, 2003, for the fiscal year ended December 28, 2002 and Exhibit 99.4 of the Registrant’s Current Report on Form 8-K, dated August 31, 2004).
10.14	Mueller Industries, Inc. 2002 Stock Option Plan Amended and Restated as of February 16, 2006 (Incorporated herein by reference to Exhibit 10.20 of the Registrant’s Annual Report on Form 10-K, dated February 28, 2007, for the fiscal year ended December 30, 2006).

30

10.15	Mueller Industries, Inc. 2009 Stock Incentive Plan (Incorporated by reference from Appendix I to the Company’s 2009 Definitive Proxy Statement with respect to the Company’s 2009 Annual Meeting of Stockholders, as filed with the Securities and Exchange Commission on March 26, 2009).
10.16	Amendment to the Mueller Industries, Inc. 2002 Stock Option Plan, dated July 11, 2011.
10.17	Amendment to the Mueller Industries, Inc. 2009 Stock Incentive Plan, dated July 11, 2011.
10.18	Mueller Industries, Inc. 2011 Annual Bonus Plan
10.19	Summary description of the Registrant’s 2012 incentive plan for certain key employees.
10.20	Credit Agreement, dated as of December 1, 2006, among the Registrant (as Borrower) and Lasalle Bank Midwest National Association (as agent), and certain lenders named therein (Incorporated herein by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K, dated July 20, 2010).
10.21	Credit Agreement, dated as of March 7, 2011, among the Registrant (as Borrower) and Bank of America, N.A. (as agent), and certain lenders named therein (Incorporated herein by reference to Exhibit 10.2 of the Registrant’s Current Report on Form 8-K, dated March 11, 2011).
10.22	Amendment No. 1 to Credit Agreement among the Registrant (as borrower), Bank of America, N.A. (as agent), and certain lenders named therein dated August 12, 2011 (Incorporated herein by reference to Exhibit 10.1 of the Registrant’s Quarterly Report on Form 10-Q, for the Quarterly period ended October 1, 2011, dated October 27, 2011).
10.23	Letter Agreement dated September 2, 2011 by and between Mueller Industries, Inc. and Leucadia National Corporation (Incorporated herein by reference to Exhibit 99.1 of the Registrant’s Current Report on Form 8-K, dated September 2, 2011).
21.0	Subsidiaries of the Registrant.
23.0	Consent of Independent Registered Public Accounting Firm.
31.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended.
31.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended.
32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

31

101.CAL	XBRL Taxonomy Extension Calculation Linkbase
101.DEF	XBRL Taxonomy Extension Definition Linkbase
101.INS	XBRL Instance Document
101.LAB	XBRL Taxonomy Extension Label Linkbase
101.PRE	XBRL Presentation Linkbase Document
101.SCH	XBRL Taxonomy Extension Schema

32

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, on February 28, 2012.

MUELLER INDUSTRIES, INC.

/S/ Gregory L. Christopher

Gregory L. Christopher, Chief Executive Officer

(Principal Executive Officer), and Director

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the date indicated.

Signature	Title	Date
/S/Alexander P. Federbush	Chairman of the Board, and Director	February 28, 2012
Alexander P. Federbush
/S/ Gregory L. Christopher	Chief Executive Officer	February 28, 2012
Gregory L. Christopher	(Principal Executive Officer), and Director
/S/ Ian M. Cumming	Director	February 28, 2012
Ian M. Cumming
/S/ Paul J. Flaherty	Director	February 28, 2012
Paul J. Flaherty
/S/ Gennaro J. Fulvio	Director	February 28, 2012
Gennaro J. Fulvio
/S/GaryS. Gladstein	Director	February 28, 2012
Gary S. Gladstein
/S/ Scott J. Goldman	Director	February 28, 2012
Scott J. Goldman
/S/ Terry Hermanson	Director	February 28, 2012
Terry Hermanson
/S/ Joseph S. Steinberg	Director	February 28, 2012
Joseph S. Steinberg

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the date indicated.

Signature and Title	Date
/S/ Kent A. McKee	February 28, 2012
Kent A. McKee
Executive Vice President and Chief Financial Officer
(Principal Financial and Accounting Officer)
/S/ Richard W. Corman	February 28, 2012
Richard W. Corman
Vice President – Controller

33

MUELLER INDUSTRIES, INC.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Financial Review	F- 2
Consolidated Statements of Income
for the years ended December 31, 2011, December 25, 2010, and December 26, 2009	F- 12
Consolidated Balance Sheets
as of December 31, 2011 and December 25, 2010	F- 13
Consolidated Statements of Cash Flows
for the years ended December 31, 2011, December 25, 2010, and December 26, 2009	F- 14
Consolidated Statements of Changes in Equity
for the years ended December 31, 2011, December 25, 2010, and December 26, 2009	F- 15
Notes to Consolidated Financial Statements	F- 17
Report of Independent Registered Public Accounting Firm	F- 48

FINANCIAL STATEMENT SCHEDULE

Schedule for the years ended December 31, 2011, December 25, 2010, and December 26, 2009
Valuation and Qualifying Accounts (Schedule II)	F- 49

F - 1

FINANCIAL REVIEW

Overview

The Company is a leading manufacturer of copper, brass, plastic, and aluminum products.  The range of these products is broad:  copper tube and fittings; brass and copper alloy rod, bar, and shapes; aluminum and brass forgings; aluminum and copper impact extrusions; plastic pipe, fittings and valves; refrigeration valves and fittings; fabricated tubular products; and steel nipples.  The Company also resells imported brass and plastic plumbing valves, malleable iron fittings, faucets and plumbing specialty products.  Mueller’s operations are located throughout the United States and in Canada, Mexico, Great Britain, and China.

The Company’s businesses are aggregated into two reportable segments: the Plumbing & Refrigeration segment and the Original Equipment Manufacturers (OEM) segment.  For disclosure purposes, as permitted under Accounting Standards Codification (ASC) 280, Segment Reporting, certain operating segments are aggregated into reportable segments.  The Plumbing & Refrigeration segment is composed of the Standard Products Division (SPD), European Operations, and Mexican Operations.  The OEM segment is composed of the Industrial Products Division (IPD), Engineered Products Division (EPD), and Jiangsu Mueller–Xingrong Copper Industries Limited (Mueller-Xingrong), the Company’s Chinese joint venture.  Certain administrative expenses and expenses related primarily to retiree benefits at inactive operations are combined into the Corporate and Eliminations classification.  These reportable segments are described in more detail below.

SPD manufactures and sells copper tube, copper and plastic fittings, line sets, plastic pipe, and valves in North America and sources products for import distribution in North America.  European Operations manufacture copper tube in Europe, which is sold in Europe and the Middle East; activities also include import distribution in the U.K. and Ireland.  Mexican Operations consist of pipe nipple manufacturing and import distribution businesses including product lines of malleable iron fittings and other plumbing specialties.  The Plumbing & Refrigeration segment sells products to wholesalers in the HVAC (heating, ventilation, and air-conditioning), plumbing, and refrigeration markets, to distributors to the manufactured housing and recreational vehicle industries, and to building material retailers.

The OEM segment manufactures and sells brass and copper alloy rod, bar, and shapes; aluminum and brass forgings; aluminum and copper impact extrusions; refrigeration valves and fittings; fabricated tubular products; and gas valves and assemblies.  Mueller–Xingrong manufactures engineered copper tube primarily for air-conditioning applications; these products are sold primarily to OEM’s located in China.  The OEM segment sells its products primarily to original equipment manufacturers, many of which are in the HVAC, plumbing, and refrigeration markets.

New housing starts and commercial construction are important determinants of the Company’s sales to the HVAC, refrigeration, and plumbing markets because the principal end use of a significant portion of the Company’s products is in the construction of single and multi-family housing and commercial buildings.  Repairs and remodeling projects are also important drivers of underlying demand for these products.

The majority of the Company’s manufacturing facilities operated at significantly below capacity during 2011, 2010, and 2009 due to reduced demand for the Company’s products arising from the general economic conditions in the U.S. and foreign markets that the Company serves.  The U.S. housing and residential construction market has not recovered from the recent economic downturn.  The recent years from 2009 through 2011 had the lowest recorded housing starts since recordkeeping began in 1959.  From 1959 through 2007, annual housing starts averaged over 1.5 million units.  Per the U.S. Census Bureau, new housing starts in the U.S. were 609 thousand in 2011, 587 thousand in 2010, and 554 thousand in 2009, all of which are substantially below average historic levels.  Mortgage rates have remained at low levels during 2011, 2010 and 2009, as the average 30-year fixed mortgage rate was 3.96 percent in December 2011, 4.71 percent in December 2010, and 4.93 percent in December 2009.  Commercial construction has also declined significantly in recent years and, in fact, most categories remain at levels less than a decade ago.  According to the U.S. Census Bureau, the private nonresidential value of construction put in place was $268.0 billion in 2011, $261.8 billion in 2010, $367.9 billion in 2009, and $408.6 billion in 2008.  Business conditions in the U.S. automotive industry were also exceptionally difficult in the economic downturn during 2008 and 2009, which affected the demand for various products in the Company’s OEM segment; however, some improvements have recently occurred.  These conditions have significantly affected the demand for virtually all of the Company’s core products in recent years.

F - 2

Residential construction activity is still at historical lows and recovery in the near-term is expected to be modest due to continuing high rates of unemployment, the impact of mounting foreclosures, and tighter lending standards.  The private non-residential construction sector, which includes offices, industrial and retail projects, showed slight improvement in 2011 after declines of almost 25 percent in 2010 and 13 percent in 2009.  The Company expects that most of the conditions will gradually improve during 2012.

Profitability of certain of the Company’s product lines depends upon the “spreads” between the cost of raw material and the selling prices of its products.  The open market prices for copper cathode and scrap, for example, influence the selling price of copper tube, a principal product manufactured by the Company.  The Company attempts to minimize the effects on profitability from fluctuations in material costs by passing through these costs to its customers.  The Company’s earnings and cash flow are dependent upon these spreads that fluctuate based upon market conditions.

Earnings and profitability are also impacted by unit volumes that are subject to market trends, such as substitute products, imports, technologies, and market share.  In core product lines, the Company intensively manages its pricing structure while attempting to maximize its profitability.  From time-to-time, this practice results in lost sales opportunities and lower volume.  For plumbing systems, plastics are the primary substitute product; these products represent an increasing share of consumption.  U.S. consumption of copper tube is still predominantly supplied by U.S. manufacturers.  For certain air-conditioning and refrigeration applications, aluminum based systems are the primary substitution threat.  The Company cannot predict the acceptance or the rate of switching that may occur.  In recent years, brass rod consumption in the U.S. has declined due to the outsourcing of many manufactured products from offshore regions.

Results of Operations

2011 Performance Compared with 2010

Consolidated net sales in 2011 were $2.42 billion, a 17 percent increase compared with net sales of $2.06 billion in 2010.  The increase was primarily attributable to the increase in base metal prices, primarily copper, and slightly higher unit volumes in many of the Company’s core products.  Net selling prices generally fluctuate with changes in raw material costs.  Changes in raw material costs are generally passed through to customers by adjustments to selling prices.  The Comex average copper price in 2011 was approximately $4.01 per pound, or 17 percent higher than the 2010 average of $3.43 per pound.

Cost of goods sold was $2.12 billion in 2011 compared with $1.77 billion in 2010.  The year-over-year increase was due primarily to the increase in the price of copper, the Company’s principal raw material, and slightly higher sales volume in core product lines.

Depreciation and amortization decreased from $40.4 million in 2010 to $36.9 million in 2011 due to certain assets becoming fully depreciated in late 2010.  Selling, general, and administrative expenses increased to $136.0 million in 2011; this $4.8 million increase was primarily due to increased employment costs, including incentive compensation of $9.9 million.  These increases were partially offset by reduced bad debt expense of $5.0 million.

During 2011, the Company recorded a gain of $10.5 million upon receipt of payment related to the December 10, 2010, settlement of a lawsuit against Peter D. Berkman, Jeffrey A. Berkman, and Homewerks Worldwide LLC.  

During 2010, the Company recognized insurance settlements of $22.7 million related to the reimbursement for losses claimed as a result of fires at the U.K. copper tube mill in November 2008, and the Fulton, Mississippi copper tube mill in July 2009.

Interest expense remained consistent with the prior year at $11.6 million.  Other income (expense), net was $1.9 million income in 2011 compared with expense of $2.7 million for 2010.  This fluctuation was primarily due to an environmental provision of $2.5 million related to the Eureka Mills Site in 2010.

F - 3

Income tax expense was $43.1 million, for an effective rate of 33 percent.  This rate was lower than what would be computed using the U.S. statutory federal rate primarily due to the U.S. production activities deduction benefit of $3.9 million and reductions in tax contingencies of $1.9 million.  These decreases were partially offset by state tax expense, net of federal benefit, of $4.3 million.

The Company’s employment was approximately 3,750 at the end of 2011 compared with 3,600 at the end of 2010.

Plumbing & Refrigeration Segment

Net sales by the Plumbing & Refrigeration segment increased 19 percent to $1.3 billion in 2011 from $1.1 billion in 2010.  The increase in net sales was due to higher selling prices resulting from higher average prices of raw materials and slightly higher unit volumes.  Of the $215 million increase in net sales, approximately $34 million was attributable to higher unit volume and approximately $149 million was due to higher net selling prices in the segment’s core product lines consisting primarily of copper tube, line sets, and fittings.  Cost of goods sold increased from $951.2 million in 2010 to $1.14 billion in 2011, which was also due to higher sales volume and increasing raw material prices, primarily copper.  Depreciation and amortization decreased from $24.9 million in 2010 to $20.9 million in 2011 due to reduced depreciation expense resulting from certain assets becoming fully depreciated in 2010.  Selling, general, and administrative expenses increased from $78.6 million in 2010 to $84.8 million in 2011.  The increase is primarily due to increased sales and distribution expenses resulting from higher sales volume and increased employment costs, including incentive compensation of $5.1 million.  Operating income for the segment increased from $83.7 million in 2010 to $84.8 million in 2011.  This was due to higher sales volume and increased spreads in the segment’s core products especially in copper tube and fittings.  This increase was offset by $22.7 million of insurance settlement gains recognized in 2010, primarily resulting from the fire at the U.K. tube operation.

During 2011, a portion of the Wynne, Arkansas manufacturing operation was extensively damaged by fire, which impacted a portion of the segment’s copper tube, line sets, and DWV plastic fittings operations.  Direct, incremental property damage and cleanup costs have been deferred as a receivable, while the impact of lost sales and other extra expenses associated with business interruption have been recognized as incurred in the Consolidated Statement of Income for 2011.  These amounts are expected to be covered by business interruption insurance; however, the gain will not be recognized until final settlement of the claim.

OEM Segment

The OEM segment’s net sales were $1.12 billion in 2011 compared with $958.9 million in 2010.  The increase was due primarily to higher net selling prices resulting from higher average costs of raw materials, partially offset by slightly lower unit volume.  Of the $161.1 million increase in net sales, approximately $121.0 million was due to higher net selling prices in the segment’s core product lines of brass rod, forgings, and commercial tube.  Cost of goods sold increased to $1.01 billion in 2011 from $837.6 million in 2010, which was also due to the increase in the average costs of raw materials.  Depreciation and amortization remained relatively consistent.  Selling, general, and administrative expenses were $24.8 million in 2011 compared with $26.8 million in 2010.  The decrease is due primarily to decreased bad debt expense of $4.5 million, partially offset by increased employment costs of $2.3 million.  Operating income decreased from $80.1 million in 2010 to $72.7 million in 2011, due primarily to slightly lower unit volume and net spreads and increased per-unit conversion costs in core products, partially offset by decreased bad debt expense.

2010 Performance Compared with 2009

Consolidated net sales in 2010 were $2.06 billion, a 33 percent increase compared with net sales of $1.55 billion in 2009.  The increase was primarily attributable to higher unit sales volumes in most of the Company’s primary product lines and the increase in base metal prices, primarily copper.  The Comex average copper price in 2010 was approximately $3.43 per pound, or 46 percent higher than the 2009 average of $2.35 per pound.

Cost of goods sold was $1.77 billion in 2010 compared with $1.33 billion in 2009.  The year-over-year increase was due primarily to increased sales volume in core product lines and the increase in the price of copper.

F - 4

Depreciation and amortization remained relatively consistent.  Selling, general, and administrative expenses increased to $131.2 million in 2010; this $14.6 million increase was primarily due to increased employment costs, including incentive compensation of $9.2 million, increased foreign currency transaction losses of $2.0 million, and increased bad debt expense of $4.3 million.  These increases were partially offset by reduced professional fees of $2.9 million.

During 2010, the Company recognized insurance settlements of $22.7 million related to the reimbursement for losses claimed as a result of fires at the U.K. copper tube mill in November 2008, and the Fulton, Mississippi copper tube mill in July 2009.

During 2009, the Company recognized impairment charges of $29.8 million primarily related to goodwill as a result of its annual assessment.  For this assessment, the projected operating results and cash flows for certain reporting units indicated that their fair market value was less than their net carrying value, including goodwill.

Interest expense increased to $11.6 million in 2010 from $10.0 million in 2009.  This increase was due to increased borrowings by Mueller–Xingrong to fund operations.  Other income (expense), net was $2.7 million expense in 2010 compared with income of $0.9 million for 2009.  This fluctuation was primarily due to an environmental provision of $2.5 million related to the Eureka Mills Site.

Income tax expense was $34.3 million, for an effective rate of 28 percent.  This rate was lower than what would be computed using the U.S. statutory federal rate primarily due to the release of a valuation allowance in a foreign jurisdiction of $5.5 million, the U.S. production activities deduction benefit of $3.0 million, the effect of foreign rates lower than the U.S. federal statutory rate and other foreign adjustments of $2.1 million, and reductions in tax contingencies of $1.5 million.  These decreases were partially offset by state tax expense, net of federal benefit, of $2.9 million.

The Company’s employment was approximately 3,600 at the end of 2010 compared with 3,300 at the end of 2009.

Plumbing & Refrigeration Segment

Net sales by the Plumbing & Refrigeration segment increased 25 percent to $1.1 billion in 2010 from $892.1 million in 2009.  The increase in net sales was due to higher unit sales volumes resulting from increased demand in the majority of the segment’s core product lines and from higher selling prices resulting from higher average prices of raw materials.  Of the $223.5 million increase in net sales, approximately $25.8 million was attributable to higher unit volume and approximately $197.7 million was due to higher net selling prices in the segment’s core product lines consisting primarily of copper tube, line sets, and fittings.  Cost of goods sold increased from $744.9 million in 2009 to $951.2 million in 2010, which was also due to higher sales volume and increasing raw material prices, primarily copper.  Depreciation and amortization decreased from $26.3 million in 2009 to $24.9 million in 2010 due to reduced depreciation expense resulting from certain assets becoming fully depreciated.  Selling, general, and administrative expenses increased from $74.4 million in 2009 to $78.6 million in 2010.  The increase is primarily due to increased sales and distribution expenses resulting from higher sales volume and increased employment costs, including incentive compensation of $1.6 million.  During 2009, the segment recorded non-cash impairment charges of $19.5 million primarily related to goodwill.  Operating income for the segment increased from $27.0 million to $83.7 million due to higher sales volume in the segment’s core product lines, increased spreads in core products especially in copper tube and fittings.

OEM Segment

The OEM segment’s net sales were $958.9 million in 2010 compared with $664.1 million in 2009.  The increase was due primarily to higher sales volume and higher net selling prices resulting from higher average costs of raw materials.  Of the $294.8 million increase in net sales, approximately $116.8 million was attributable to higher unit volume and approximately $178.0 million was due to higher net selling prices in the segment’s core product lines of brass rod, forgings, and commercial tube.  Cost of goods sold increased to $837.6 million in 2010 from $590.4 million in 2009, which was also due to the increase in sales volume and average costs of raw materials.  Depreciation and amortization remained relatively consistent.  Selling, general, and administrative expenses were $26.8 million in 2010 compared with $20.5 million in 2009.  The increase is due primarily to increased employment costs, including incentive compensation of $1.4 million, and increased bad debt expense of $3.9 million.  Operating income increased from $28.7 million in 2009 to $80.1 million in 2010, due primarily to higher sales volumes, improved unit spreads, and lower per unit conversion costs.  Impairment charges, primarily pertaining to goodwill were $10.3 million in 2009 compared with none in 2010.

F - 5

Liquidity and Capital Resources

Cash and cash equivalents increased to $514.2 million at December 31, 2011, from $394.1 million at December 25, 2010, for a net increase of $120.1 million.  Major components of the 2011 change included $153.7 million of cash provided by operating activities, $26.7 million of cash used in investing activities and $6.9 million of cash used in financing activities.

Of the cash and cash equivalents held at December 31, 2011, $87.4 million was held by foreign subsidiaries.  The Company expects to repatriate $0.8 million of this cash and has accrued deferred tax on these earnings.  All other earnings of the foreign subsidiaries are considered to be permanently reinvested, and it is not practicable to compute the potential deferred tax liability associated with these undistributed foreign earnings.  The Company believes that cash held domestically, funds available through the Credit Facility, and cash generated from U.S. based operations will be adequate to meet the future needs of the U.S. based operations.

The primary components of cash provided by operating activities were consolidated net income of $87.1 million, insurance proceeds of $10.0 million resulting from an advance on the Wynne, Arkansas fire claim, changes in working capital, and non-cash adjustments primarily consisting of depreciation and amortization of $37.3 million.  Major changes in working capital included a $28.7 million decrease in trade accounts receivable, $15.7 million increase in inventories and a $8.0 million increase in current liabilities.  Changes in the components of working capital, especially accounts receivable and inventories, are heavily driven by the changes in raw material prices, primarily copper.

The Company spent approximately $1.4 million during 2011 for environmental matters.  As of December 31, 2011, the Company expects to spend $1.3 million in 2012, $1.1 million in 2013, $1.0 million in 2014, $0.5 million in 2015, $0.5 million in 2016, and $9.0 million thereafter for ongoing projects.  The timing of a potential payment for a $9.5 million settlement offer has not yet been determined.  

The major components of net cash used in investing activities during 2011 included $18.8 million used for capital expenditures and $6.9 million used for the acquisition of the assets of Tube Forming, L.P.  Net cash used in financing activities totaled $6.9 million, which consists primarily of $15.1 million used for payment of regular quarterly dividends to stockholders of the Company.  This was partially offset by $3.9 million in net proceeds from the exercise of incentive stock options and $6.2 million of net withdrawals from the joint venture’s credit facility.

On March 7, 2011, the Company entered into a Credit Agreement (Credit Facility) with a syndicate of banks establishing a $350 million revolving credit facility, which matures March 7, 2016.  The Credit Facility contains similar provisions and replaces the Company’s prior credit agreement dated December 1, 2006.  At year-end, the Company had no borrowings against the Credit Facility.  Approximately $11.3 million in letters of credit were backed by the Credit Facility at the end of 2011.  As of December 31, 2011, the Company’s total debt was $197.7 million or 18 percent of its total capitalization.

Covenants contained in the Company’s financing obligations require, among other things, the maintenance of minimum levels of tangible net worth and the satisfaction of certain minimum financial ratios.  As of December 31, 2011, the Company was in compliance with all of its debt covenants.

F - 6

Contractual cash obligations of the Company as of December 31, 2011 included the following:

			Payments Due by Year
(In millions)	Total		2012		2013-2014		2015-2016		Thereafter
Debt	$	197.7	$	41.3	$	150.2	$	2.0	$	4.2
Interest on fixed rate debt		26.7		8.9		17.8		—		—
Consulting Agreement (1)		6.7		1.3		2.7		2.0		0.7
Operating leases		34.2		7.8		11.7		8.3		6.4
Purchase commitments (2)		391.1		391.0		0.1		—		—
Total contractual cash obligations	$	656.4	$	450.3	$	182.5	$	12.3	$	11.3

(1)	See Note 10 to Consolidated Financial Statements.
(2)	The Company has contractual supply commitments for raw materials totaling $388 million at year-end prices; these contracts contain variable pricing based on Comex and the London Metals Exchange (LME).  These commitments are for purchases of raw materials that are expected to be consumed in the ordinary course of business.

The above obligations will be satisfied with existing cash, the Credit Facility, and cash generated by operations.  Cash flows to fund pension and other postretirement benefit obligations were $4.0 million in 2011 and $4.1 million in 2010.  The Company has no off-balance sheet financing arrangements except for the operating leases identified above.

Fluctuations in the cost of copper and other raw materials affect the Company’s liquidity.  Changes in material costs directly impact components of working capital, primarily inventories and accounts receivable.  The price of copper has fluctuated significantly and averaged approximately $2.35 in 2009, $3.43 in 2010, and $4.01 in 2011.  Copper was very volatile during 2011, averaging as high as $4.49 per pound during February 2011 and as low as $3.34 per pound during October 2011, and closing at $3.43 per pound.

The Company’s Board of Directors declared a regular quarterly dividend of 10 cents per share on its common stock during each quarter of 2011, 2010, and 2009.  Payment of dividends in the future is dependent upon the Company’s financial condition, cash flows, capital requirements, earnings, and other factors.

Management believes that cash provided by operations, the Credit Facility, and currently available cash of $514.2 million will be adequate to meet the Company’s normal future capital expenditure and operational needs.  The Company’s current ratio (current assets divided by current liabilities) was 4.8 to 1 as of December 31, 2011.  In addition, in January 2012, the Company received a second advance from the insurance company totaling $40 million related to the Wynne, Arkansas fire claim.

The Company’s Board of Directors has extended, until October 2012, its authorization to repurchase up to ten million shares of the Company’s common stock through open market transactions or through privately negotiated transactions.  The Company has no obligation to repurchase any shares and may cancel, suspend, or extend the time period for the repurchase of shares at any time.  Any repurchases will be funded primarily through existing cash and cash from operations.  The Company may hold any shares repurchased in treasury or use a portion of the repurchased shares for employee benefit plans, as well as for other corporate purposes.  From its initial authorization in 1999 through December 31, 2011, the Company had repurchased approximately 2.4 million shares under this authorization.  In addition, the Company may repurchase portions of its 6% Subordinated Debentures through open market transactions or through privately negotiated transactions.

F - 7

Market Risks

The Company is exposed to market risks from changes in raw material and energy costs, interest rates, and foreign currency exchange rates.  To reduce such risks, the Company may periodically use financial instruments.  Hedging transactions are authorized and executed pursuant to policies and procedures.  Further, the Company does not buy or sell financial instruments for trading purposes.  A discussion of the Company’s accounting for derivative instruments and hedging activities is included in the Summary of Significant Accounting Policies in the Notes to Consolidated Financial Statements.

Cost and Availability of Raw Materials and Energy

Raw materials, primarily copper and brass, represent the largest component of the Company’s variable costs of production.  The cost of these materials is subject to global market fluctuations caused by factors beyond the Company’s control.  Significant increases in the cost of metal, to the extent not reflected in prices for the Company’s finished products, or the lack of availability could materially and adversely affect the Company’s business, results of operations and financial condition.

The Company occasionally enters into forward fixed-price arrangements with certain customers.  The Company may utilize futures contracts to hedge risks associated with forward fixed-price arrangements.  The Company may also utilize futures contracts to manage price risk associated with inventory.  Depending on the nature of the hedge, changes in the fair value of the futures contracts will either be offset against the change in fair value of the inventory through earnings or recognized as a component of accumulated other comprehensive income (OCI) and reflected in earnings upon the sale of inventory.  Periodic value fluctuations of the contracts generally offset the value fluctuations of the underlying fixed-price transactions or inventory.  At year-end, the Company held open futures contracts to purchase approximately $21.1 million of copper over the next nine months related to fixed-price sales orders.

The Company may enter into futures contracts or forward fixed-price arrangements with certain vendors to manage price risk associated with natural gas purchases.  The effective portion of gains and losses with respect to futures positions are deferred in equity as a component of OCI and reflected in earnings upon consumption of natural gas.  Periodic value fluctuations of the futures contracts generally offset the value fluctuations of the underlying natural gas prices.  There were no open futures contracts to purchase natural gas at December 31, 2011.

Interest Rates

At December 31, 2011 and December 25, 2010, the fair value of the Company’s debt was estimated at $197.0 million and $189.9 million, respectively, primarily using market yields and taking into consideration the underlying terms of the debt.  Such fair value was less than the carrying value of debt at December 31, 2011 and December 25, 2010 by $0.7 million and $0.3 million, respectively.  Market risk is estimated as the potential change in fair value resulting from a hypothetical 10 percent decrease in interest rates and amounted to $1.7 million at December 31, 2011 and $2.8 million at December 25, 2010.

The Company had variable-rate debt outstanding of $49.6 million at December 31, 2011 and $42.1 million at December 25, 2010.  At these borrowing levels, a hypothetical 10 percent increase in interest rates would have had an insignificant unfavorable impact on the Company’s pre-tax earnings and cash flows.  The primary interest rate exposures on floating-rate debt are based on LIBOR and the base-lending rate published by the People’s Bank of China.

Foreign Currency Exchange Rates

Foreign currency exposures arising from transactions include firm commitments and anticipated transactions denominated in a currency other than an entity’s functional currency.  The Company and its subsidiaries generally enter into transactions denominated in their respective functional currencies.  The Company may utilize certain futures contracts or forward contracts with financial institutions to hedge foreign currency transactional exposures.  Gains and losses with respect to these positions are deferred in equity as a component of OCI and reflected in earnings upon collection of receivables.  At December 31, 2011, the Company had open forward contracts with a financial institution to sell approximately 1.6 million Canadian dollars through March 2012 and 0.6 million Euros through February 2012.

F - 8

The Company’s primary foreign currency exposure arises from foreign-denominated revenues and profits and their translation into U.S. dollars.  The primary currencies to which the Company is exposed include the Canadian dollar, the British pound sterling, the euro, the Mexican peso, and the Chinese renminbi.  The Company generally views as long-term its investments in foreign subsidiaries with a functional currency other than the U.S. dollar.  As a result, the Company generally does not hedge these net investments.  The net investment in foreign subsidiaries translated into U.S. dollars using the year-end exchange rates was $180.8 million at December 31, 2011 and $188.2 million at December 25, 2010.  The potential loss in value of the Company’s net investment in foreign subsidiaries resulting from a hypothetical 10 percent adverse change in quoted foreign currency exchange rates at December 31, 2011 and December 25, 2010 amounted to $18.1 million and $18.8 million, respectively.  This change would be reflected in the foreign currency translation component of OCI in the equity section of the Company’s Consolidated Balance Sheets, until the foreign subsidiaries are sold or otherwise disposed.

During 2011, exchange rates with respect to many foreign currencies fluctuated significantly with respect to the U.S. dollar.  The Company has significant investments in foreign operations whose functional currency is the British pound sterling and the Mexican peso.  The Mexican peso decreased approximately 11.4 percent relative to the U.S. dollar during 2011.  The resulting foreign currency translation gains and losses are recorded as a component of OCI.

Critical Accounting Policies and Estimates

The Company’s Consolidated Financial Statements are prepared in accordance with accounting principles generally accepted in the United States.  Application of these principles requires the Company to make estimates, assumptions, and judgments that affect the amounts reported in the Consolidated Financial Statements.  Management believes the most complex and sensitive judgments, because of their significance to the Consolidated Financial Statements, result primarily from the need to make estimates about the effects of matters which are inherently uncertain.  The accounting policies and estimates that are most critical to aid in understanding and evaluating the results of operations and financial position of the Company include the following:

Inventory Valuation

The Company’s inventories are valued at the lower-of-cost-or-market.  The material component of its U.S. copper tube and copper fittings inventories is valued on a LIFO basis.  Other manufactured inventories, including the non-material components of U.S. copper tube and copper fittings, are valued on a FIFO basis.  Certain inventories purchased for resale are valued on an average cost basis.  Elements of cost in finished goods inventory in addition to the cost of material include depreciation, amortization, utilities, consumable production supplies, maintenance, production wages, and transportation costs.

The market price of copper cathode and scrap are subject to volatility.  During periods when open market prices decline below net book value, the Company may need to provide an allowance to reduce the carrying value of its inventory.  In addition, certain items in inventory may be considered obsolete and, as such, the Company may establish an allowance to reduce the carrying value of those items to their net realizable value.  Changes in these estimates related to the value of inventory, if any, may result in a materially adverse impact on the Company’s reported financial position or results of operations.  The Company recognizes the impact of any changes in estimates, assumptions, and judgments in income in the period in which it is determined.

Goodwill

Goodwill represents cost in excess of fair values assigned to the underlying net assets of acquired businesses.  Goodwill is subject to impairment testing, which is performed by the Company as of the first day of the fourth quarter of each fiscal year, unless circumstances dictate more frequent testing.  For testing purposes, the Company uses components of its operating segments; components of a segment having similar economic characteristics are combined.  The annual impairment test is a two-step process.  The first step is the estimation of fair value of reporting units that have goodwill.  If this estimate indicates that impairment potentially exists, the second step (step two) is performed.  Step two, used to measure the amount of goodwill impairment loss, compares the implied fair value of goodwill to the carrying value.  In step two the Company is required to allocate the fair value of each reporting unit, as determined in step one, to the fair value of the reporting unit’s assets and liabilities, including unrecognized intangible assets and corporate allocation where applicable, in a hypothetical purchase price allocation as if the reporting unit had been purchased on that date.  If the implied fair value of goodwill is less than the carrying value, an impairment charge is recorded.  Inputs to that model include various estimates, including cash flow projections and assumptions.  Some of the inputs are highly subjective and are affected by changes in business conditions and other factors.  Changes in any of the inputs could have an effect on future tests and result in material impairment charges.

F - 9

Income Taxes

Deferred income tax assets and liabilities are recognized when differences arise between the treatment of certain items for financial statement and tax purposes.  Realization of certain components of deferred tax assets is dependent upon the occurrence of future events.  The Company records valuation allowances to reduce its deferred tax assets to the amount it believes is more likely than not to be realized.  These valuation allowances can be impacted by changes in tax laws, changes to statutory tax rates, and future taxable income levels and are based on the Company’s judgment, estimates, and assumptions.  In the event the Company were to determine that it would not be able to realize all or a portion of the net deferred tax assets in the future, the Company would increase the valuation allowance through a charge to income tax expense in the period that such determination is made.  Conversely, if the Company were to determine that it would be able to realize its deferred tax assets in the future, in excess of the net carrying amounts, the Company would decrease the recorded valuation allowance through a decrease to income tax expense in the period that such determination is made.

The Company provides for uncertain tax positions and the related interest and penalties, if any, based upon management’s assessment of whether a tax benefit is more likely than not to be sustained upon examination by tax authorities.  Tax benefits for uncertain tax positions that are recognized in the financial statements are measured as the largest amount of benefit, determined on a cumulative probability basis, that is more likely than not to be realized upon ultimate settlement.  To the extent the Company prevails in matters for which a liability for an uncertain tax position is established or is required to pay amounts in excess of the liability, the Company’s effective tax rate in a given financial statement period may be affected.

Environmental Reserves

The Company recognizes an environmental liability when it is probable the liability exists and the amount is reasonably estimable.  The Company estimates the duration and extent of its remediation obligations based upon reports of outside consultants; internal analyses of clean-up costs, and ongoing monitoring costs; communications with regulatory agencies; and changes in environmental law.  If the Company were to determine that its estimates of the duration or extent of its environmental obligations were no longer accurate, the Company would adjust its environmental liabilities accordingly in the period that such determination is made.  Estimated future expenditures for environmental remediation are not discounted to their present value.  Accrued environmental liabilities are not reduced by potential insurance reimbursements.

Environmental expenses that relate to ongoing operations are included as a component of cost of goods sold.  Environmental expenses related to non-operating properties are included in other income (expense), net in the Consolidated Statements of Income.

Allowance for Doubtful Accounts

The Company provides an allowance for receivables that may not be fully collected.  In circumstances where the Company is aware of a customer’s inability to meet its financial obligations (e.g., bankruptcy filings or substantial downgrading of credit ratings), it records a reserve for bad debts against amounts due to reduce the net recognized receivable to the amount it believes most likely will be collected.  For all other customers, the Company recognizes reserves for bad debts based on its historical collection experience.  If circumstances change (e.g., greater than expected defaults or an unexpected material change in a major customer’s ability to meet its financial obligations), the Company’s estimate of the recoverability of amounts due could be changed by a material amount.

F - 10

Cautionary Statement Regarding Forward-Looking Information

This Annual Report contains various forward-looking statements and includes assumptions concerning the Company’s operations, future results, and prospects.  These forward-looking statements are based on current expectations and are subject to risk and uncertainties.  In connection with the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, the Company provides the following cautionary statement identifying important economic, political, and technological factors, among others, which could cause actual results or events to differ materially from those set forth in or implied by the forward-looking statements and related assumptions.

In addition to those factors discussed under “Risk Factors” in this Annual Report on Form 10-K, such factors include: (i) the current and projected future business environment, including interest rates and capital and consumer spending; (ii) the domestic housing and commercial construction industry environment; (iii) the extent and duration of the recovery from the 2008 through 2010 economic decline; (iv) availability and price fluctuations in commodities (including copper, natural gas, and other raw materials, including crude oil that indirectly affects plastic resins); (v) competitive factors and competitor responses to the Company’s initiatives; (vi) stability of government laws and regulations, including taxes; (vii) availability of financing; and (viii) continuation of the environment to make acquisitions, domestic and foreign, including regulatory requirements and market values of candidates.

F - 11

MUELLER INDUSTRIES, INC.

CONSOLIDATED STATEMENTS OF INCOME

Years Ended December 31, 2011, December 25, 2010, and December 26, 2009

(In thousands, except per share data)	2011			2010			2009
Net sales	$	2,417,797		$	2,059,797		$	1,547,225
Cost of goods sold		2,115,677			1,774,811			1,327,022
Depreciation and amortization		36,865			40,364			41,568
Selling, general, and administrative expense		135,953			131,211			116,660
Litigation settlement		(10,500	)		—			—
Insurance settlements		—			(22,736	)		—
Impairment charges		—			—			29,755
Operating income		139,802			136,147			32,220
Interest expense		(11,553	)		(11,647	)		(9,963	)
Other income (expense), net		1,912			(2,650	)		872
Income before income taxes		130,161			121,850			23,129
Income tax expense		(43,075	)		(34,315	)		(17,792	)
Consolidated net income		87,086			87,535			5,337
Less net income attributable to noncontrolling interest		(765	)		(1,364	)		(662	)
Net income attributable to Mueller Industries, Inc.	$	86,321		$	86,171		$	4,675
Weighted average shares for basic earnings per share		37,835			37,672			37,336
Effect of dilutive stock-based awards		361			97			88
Adjusted weighted average shares for diluted earnings per share		38,196			37,769			37,424
Basic earnings per share	$	2.28		$	2.29		$	0.13
Diluted earnings per share	$	2.26		$	2.28		$	0.12
Dividends per share	$	0.40		$	0.40		$	0.40
See accompanying notes to consolidated financial statements.

F - 12

MUELLER INDUSTRIES, INC.

CONSOLIDATED BALANCE SHEETS

As of December 31, 2011 and December 25, 2010

(In thousands, except share data)	2011			2010
Assets
Current assets:
Cash and cash equivalents	$	514,162		$	394,139
Accounts receivable, less allowance for doubtful accounts of  $1,564 in 2011 and $5,447 in 2010		250,027			269,258
Inventories		219,193			209,892
Current deferred income taxes		21,104			19,227
Other current assets		22,213			19,798
Total current assets		1,026,699			912,314
Property, plant, and equipment, net		203,744			229,498
Goodwill, net		102,250			102,250
Other assets		14,911			14,934
Total Assets	$	1,347,604		$	1,258,996
Liabilities
Current liabilities:
Current portion of debt	$	41,265		$	32,020
Accounts payable		65,545			67,849
Accrued wages and other employee costs		39,319			33,338
Other current liabilities		67,115			61,920
Total current liabilities		213,244			195,127
Long-term debt, less current portion		156,476			158,226
Pension liabilities		32,839			18,249
Postretirement benefits other than pensions		21,405			22,690
Environmental reserves		22,892			23,902
Deferred income taxes		14,856			24,081
Other noncurrent liabilities		1,130			824
Total liabilities		462,842			443,099
Equity
Mueller Industries, Inc. stockholders' equity:
Preferred stock - $1.00 par value; shares authorized 5,000,000; none outstanding		—			—
Common stock - $.01 par value; shares authorized 100,000,000; issued 40,091,502; outstanding 38,236,568 in 2011 and 37,854,760 in 2010		401			401
Additional paid-in capital		266,936			263,233
Retained earnings		682,380			611,279
Accumulated other comprehensive loss		(49,409	)		(37,046	)
Treasury common stock, at cost		(44,620	)		(49,131	)
Total Mueller Industries, Inc. stockholders' equity		855,688			788,736
Noncontrolling interest		29,074			27,161
Total equity		884,762			815,897
Commitments and contingencies		—			—
Total Liabilities and Equity	$	1,347,604		$	1,258,996
See accompanying notes to consolidated financial statements.

F - 13

MUELLER INDUSTRIES, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

Years Ended December 31, 2011, December 25, 2010, and December 26, 2009

(In thousands)	2011			2010			2009
Operating activities:
Consolidated net income	$	87,086		$	87,535		$	5,337
Reconciliation of net income to net cash provided by operating activities:
Depreciation		35,966			39,656			40,867
Amortization of intangibles		899			708			701
Amortization of debt issuance costs		397			288			190
Stock-based compensation expense		3,482			2,877			2,633
Insurance settlements		—			(22,736	)		—
Insurance proceeds – noncapital related		10,000			5,561			7,338
Income tax benefit from exercise of stock options		(853	)		(145	)		(203	)
Impairment charges		—			—			29,755
Deferred income taxes		(4,190	)		(6,627	)		(2,554	)
Doubtful accounts receivable		(229	)		4,763			506
Gain on early retirement of debt		—			—			(128	)
(Gain) loss on disposal of properties		(202	)		756			683
Changes in assets and liabilities, net of businesses acquired:
Receivables		28,716			(46,494	)		(6,988	)
Inventories		(15,678	)		(17,248	)		22,699
Other assets		460			2,974			(505	)
Current liabilities		7,966			4,913			(21,161	)
Other liabilities		(1,593	)		(623	)		(1,808	)
Other, net		1,522			199			26
Net cash provided by operating activities		153,749			56,357			77,388
Investing activities:
Capital expenditures		(18,751	)		(18,678	)		(13,942	)
Acquisition of businesses		(6,882	)		(2,021	)		—
Proceeds from sales of properties		1,984			71			611
Net (deposits into) withdrawals from restricted cash balances		(3,055	)		(156	)		7,013
Insurance proceeds		—			18,798			—
Net cash used in investing activities		(26,704	)		(1,986	)		(6,318	)
Financing activities:
Repayments of long-term debt		(750	)		—			(370	)
Dividends paid to stockholders of Mueller Industries, Inc.		(15,146	)		(15,074	)		(14,944	)
Dividends paid to noncontrolling interests		—			(741	)		(1,449	)
Issuance of debt by joint venture, net		6,162			6,848			131
Net proceeds from the exercise of stock options		3,880			2,428			8,275
Income tax benefit from exercise of stock options		853			145			203
Debt issuance costs		(1,943	)		—			—
Net cash used in financing activities		(6,944	)		(6,394	)		(8,154	)
Effect of exchange rate changes on cash		(78	)		161			4,225
Increase in cash and cash equivalents		120,023			48,138			67,141
Cash and cash equivalents at the beginning of the year		394,139			346,001			278,860
Cash and cash equivalents at the end of the year	$	514,162		$	394,139		$	346,001
For supplemental disclosures of cash flow information, see Notes 1, 5, 7, and 14.
See accompanying notes to consolidated financial statements.

F - 14

MUELLER INDUSTRIES, INC.

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

Years Ended December 31, 2011, December 25, 2010, and December 26, 2009

	2011					2010					2009
(In thousands)	Shares		Amount			Shares		Amount			Shares		Amount
Common stock:
Balance at beginning of year		40,092	$	401			40,092	$	401			40,092	$	401
Balance at end of year		40,092	$	401			40,092	$	401			40,092	$	401
Additional paid-in capital:
Balance at beginning of year			$	263,233				$	262,166				$	262,378
Issuance of shares under incentive stock option plans				2,340					(394	)				(1,295	)
Stock-based compensation expense				3,482					2,877					2,633
Income tax benefit from exercise of stock options				853					145					203
Write-off of excess tax benefits arising from the exercise of stock options				—					—					(353	)
Issuance of restricted stock				(2,972	)				(1,561	)				(1,400	)
Balance at end of year			$	266,936				$	263,233				$	262,166
Retained earnings:
Balance at beginning of year			$	611,279				$	540,218				$	550,501
Net income attributable to Mueller Industries, Inc.				86,321					86,171					4,675
Dividends paid or payable to stockholders of Mueller Industries, Inc.				(15,220	)				(15,110	)				(14,958	)
Balance at end of year			$	682,380				$	611,279				$	540,218
Accumulated other comprehensive (loss) income:
Foreign currency translation			$	(916	)			$	(977	)			$	13,278
Net change with respect to derivative instruments and hedging activities, net of tax of $559, $(191), and $(1,794)				(988	)				376					4,097
Net actuarial loss on pension and postretirement obligations, net of tax of $4,786, $1,631, and $2,138				(10,378	)				(402	)				(5,655	)
Other, net				(81	)				61					289
Total other comprehensive (loss) income attributable to Mueller Industries, Inc.				(12,363	)				(942	)				12,009
Balance at beginning of year				(37,046	)				(36,104	)				(48,113	)
Balance at end of year			$	(49,409	)			$	(37,046	)			$	(36,104	)

F - 15

MUELLER INDUSTRIES, INC.

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(continued)

Years Ended December 31, 2011, December 25, 2010, and December 26, 2009

	2011						2010						2009
(In thousands)	Shares			Amount			Shares			Amount			Shares			Amount
Treasury stock:
Balance at beginning of year		2,237		$	(49,131	)		2,442		$	(53,514	)		2,949		$	(64,484	)
Issuance of shares under incentive stock option plans		(464	)		10,637			(149	)		3,240			(477	)		10,440
Repurchase of common stock		214			(9,098	)		15			(418	)		34			(870	)
Issuance of restricted stock		(132	)		2,972			(71	)		1,561			(64	)		1,400
Balance at end of year		1,855		$	(44,620	)		2,237		$	(49,131	)		2,442		$	(53,514	)
Noncontrolling interest:
Balance at beginning of year				$	27,161					$	25,775					$	24,582
Net income attributable to noncontrolling interest					765						1,364						662
Dividends paid to noncontrolling interests					—						(741	)					(1,449	)
Net change with respect to derivative instruments and hedging activities, net of tax of $(279)					—						—						1,952
Foreign currency translation					1,148						763						28
Balance at end of year				$	29,074					$	27,161					$	25,775
Comprehensive income:
Consolidated net income				$	87,086					$	87,535					$	5,337
Consolidated other comprehensive (loss) income					(11,215	)					(180	)					13,989
Consolidated comprehensive income					75,871						87,355						19,326
Less: comprehensive income attributable to noncontrolling interest					(1,913	)					(2,127	)					(2,642	)
Comprehensive income attributable to Mueller Industries, Inc.				$	73,958					$	85,228					$	16,684
See accompanying notes to consolidated financial statements.

F - 16

Notes to Consolidated Financial Statements

Note 1 – Summary of Significant Accounting Policies

Nature of Operations

The principal business of Mueller Industries, Inc. is the manufacture and sale of copper tube and fittings; line sets; brass and copper alloy rod, bar, and shapes; aluminum and brass forgings; aluminum and copper impact extrusions; plastic pipe, fittings and valves; steel nipples; refrigeration valves and fittings; fabricated tubular products; and gas valves and assemblies.  The Company also resells imported brass and plastic plumbing valves, malleable iron fittings, faucets, and plumbing specialty products.  The Company markets its products to the HVAC, plumbing, refrigeration, hardware, and other industries.  Mueller's operations are located throughout the United States and in Canada, Mexico, Great Britain, and China.

Principles of Consolidation

The Consolidated Financial Statements include the accounts of Mueller Industries, Inc. and its majority owned subsidiaries.  All significant intercompany accounts and transactions have been eliminated in consolidation.  The noncontrolling interest represents a separate private ownership of 49.5 percent of Mueller-Xingrong.

Revenue Recognition

Revenue is recognized when title and risk of loss passes to the customer, provided collection is determined to be probable and no significant obligations remain for the Company.  Estimates for future rebates on certain product lines and product returns are recognized in the period which the revenue is recorded.  The cost of shipping product to customers is expensed as incurred as a component of cost of goods sold.

Cash Equivalents

Temporary investments with original maturities of three months or less are considered to be cash equivalents.  These investments are stated at cost.  At December 31, 2011 and December 25, 2010, temporary investments consisted of money market mutual funds, commercial paper, bank repurchase agreements, and U.S. and foreign government securities totaling $322.1 million and $315.9 million, respectively.  Included in other current assets is restricted cash of $13.0 million and $9.2 million at December 31, 2011 and December 25, 2010, respectively.  These amounts represent required deposits into brokerage accounts that facilitate the Company’s hedging activities and deposits that secure certain short-term notes issued under Mueller-Xingrong’s credit facility.

Allowance for Doubtful Accounts

The Company provides an allowance for receivables that may not be fully collected.  In circumstances where the Company is aware of a customer’s inability to meet its financial obligations (e.g., bankruptcy filings or substantial downgrading of credit ratings), it records a reserve for bad debts against amounts due to reduce the net recognized receivable to the amount it believes most likely will be collected.  For all other customers, the Company recognizes reserves for bad debts based on its historical collection experience.  If circumstances change (e.g., greater than expected defaults or an unexpected material change in a major customer’s ability to meet its financial obligations), the Company’s estimate of the recoverability of amounts due could be changed by a material amount.

Inventories

The Company’s inventories are valued at the lower-of-cost-or-market.  The material component of its U.S. copper tube and copper fittings inventories is valued on a LIFO basis.  Other manufactured inventories, including the non-material components of U.S. copper tube and copper fittings, are valued on a FIFO basis.  Certain inventories purchased for resale are valued on an average cost basis.  Elements of cost in finished goods inventory in addition to the cost of material include depreciation, amortization, utilities, consumable production supplies, maintenance, production wages, and transportation costs.

F - 17

The market price of copper cathode and scrap is subject to volatility.  During periods when open market prices decline below net book value, the Company may need to provide an allowance to reduce the carrying value of its inventory.  In addition, certain items in inventory may be considered obsolete and, as such, the Company may establish an allowance to reduce the carrying value of those items to their net realizable value.  Changes in these estimates related to the value of inventory, if any, may result in a materially adverse impact on the Company’s reported financial position or results of operations.  The Company recognizes the impact of any changes in estimates, assumptions, and judgments in income in the period in which it is determined.

Property, Plant, and Equipment

Property, plant, and equipment are stated at cost.  Depreciation of buildings, machinery, and equipment is provided on the straight-line method over the estimated useful lives ranging from 20 to 40 years for buildings and five to 20 years for machinery and equipment.  Leasehold improvements are amortized over the lesser of their useful life or the remaining lease term.  Repairs and maintenance are expensed as incurred.

The Company evaluates the carrying value of property, plant, and equipment whenever a change in circumstances indicates that the carrying value may not be recoverable from the undiscounted future cash flows from operations.  If an impairment exists, the net book values are reduced to fair value.

Goodwill

Goodwill represents cost in excess of fair values assigned to the underlying net assets of acquired businesses.  Goodwill is subject to impairment testing, which is performed by the Company as of the first day of the fourth quarter of each fiscal year, unless circumstances dictate more frequent testing.  For testing purposes, the Company defines reporting units as components of its operating segments; components of a segment having similar economic characteristics are combined.  The annual impairment test is a two-step process.  The first step is the estimation of fair value of reporting units that have goodwill.  If this estimate indicates that impairment potentially exists, the second step (step two) is performed.  Step two, used to measure the amount of goodwill impairment loss, compares the implied fair value of goodwill to the carrying value.  In step two the Company is required to allocate the fair value of each reporting unit, as determined in step one, to the fair value of the reporting unit’s assets and liabilities, including unrecognized intangible assets and corporate allocation where applicable, in a hypothetical purchase price allocation as if the reporting unit had been purchased on that date.  If the implied fair value of goodwill is less than the carrying value, an impairment charge is recorded.  As discussed in Note 4, impairment charges were recognized in 2009.  There can be no assurance that additional goodwill impairment will not occur in the future.

Self-Insurance Accruals

The Company is primarily self-insured for workers’ compensation claims and benefits paid under certain employee health care programs.  Accruals are primarily based on estimated undiscounted cost of claims, which includes incurred but not reported claims, and are classified as accrued wages and other employee costs.

Environmental Reserves and Environmental Expenses

The Company recognizes an environmental liability when it is probable the liability exists and the amount is reasonably estimable.  The Company estimates the duration and extent of its remediation obligations based upon reports of outside consultants; internal analyses of clean-up costs and ongoing monitoring costs; communications with regulatory agencies; and changes in environmental law.  If the Company were to determine that its estimates of the duration or extent of its environmental obligations were no longer accurate, the Company would adjust its environmental liabilities accordingly in the period that such determination is made.  Estimated future expenditures for environmental remediation are not discounted to their present value.  Accrued environmental liabilities are not reduced by potential insurance reimbursements.

Environmental expenses that relate to ongoing operations are included as a component of cost of goods sold.  Environmental expenses related to non-operating properties are included in other income (expense), net on the Consolidated Statements of Income.

F - 18

Earnings Per Share

Basic earnings per share is computed based on the weighted average number of common shares outstanding.  Diluted earnings per share reflects the increase in weighted average common shares outstanding that would result from the assumed exercise of outstanding stock options and vesting of restricted stock awards calculated using the treasury stock method.  Approximately 1.3 million and 1.2 million stock options were excluded from the computation of diluted earnings per share in 2010, and 2009, respectively, as the options' exercise price was higher than the average market price of the Company's stock.

Income Taxes

Deferred income tax assets and liabilities are recognized when differences arise between the treatment of certain items for financial statement and tax purposes.  Realization of certain components of deferred tax assets is dependent upon the occurrence of future events.  The Company records valuation allowances to reduce its deferred tax assets to the amount it believes is more likely than not to be realized.  These valuation allowances can be impacted by changes in tax laws, changes to statutory tax rates, and future taxable income levels and are based on the Company’s judgment, estimates, and assumptions regarding those future events.  In the event the Company were to determine that it would not be able to realize all or a portion of the net deferred tax assets in the future, the Company would increase the valuation allowance through a charge to income tax expense in the period that such determination is made.  Conversely, if the Company were to determine that it would be able to realize its deferred tax assets in the future, in excess of the net carrying amounts, the Company would decrease the recorded valuation allowance through a decrease to income tax expense in the period that such determination is made.

The Company provides for uncertain tax positions and the related interest and penalties, if any, based upon management’s assessment of whether a tax benefit is more likely than not to be sustained upon examination by tax authorities.  Tax benefits for uncertain tax positions that are recognized in the financial statements are measured as the largest amount of benefit, determined on a cumulative probability basis, that is more likely than not to be realized upon ultimate settlement.  To the extent the Company prevails in matters for which a liability for an uncertain tax position is established or is required to pay amounts in excess of the liability, the Company’s effective tax rate in a given financial statement period may be affected.

These estimates are highly subjective and could be affected by changes in business conditions and other factors.  Changes in any of these factors could have a material impact on future income tax expense.

Taxes Collected from Customers and Remitted to Governmental Authorities

Taxes assessed by a governmental authority that are directly imposed on a revenue producing transaction between the Company and its customers, primarily value added taxes in foreign jurisdictions, are accounted for on a net (excluded from revenues and costs) basis.

Stock-Based Compensation

The Company has in effect stock incentive plans under which stock-based awards have been granted to certain employees and members of its board of directors.  Stock-based compensation expense is recognized in the Consolidated Statements of Income as a component of selling, general, and administrative expense based on the grant date fair value of the awards.

Concentrations of Credit and Market Risk

Concentrations of credit risk with respect to accounts receivable are limited due to the large number of customers comprising the Company’s customer base, and their dispersion across different geographic areas and different industries, including HVAC, plumbing, refrigeration, hardware, automotive, OEMs, and others.

The Company minimizes its exposure to base metal price fluctuations through various strategies.  Generally, it prices an equivalent amount of copper raw material, under flexible pricing arrangements it maintains with its suppliers, at the time it determines the selling price of finished products to its customers.

F - 19

Derivative Instruments and Hedging Activities

The Company has utilized futures contracts to manage the volatility related to purchases of copper and natural gas, and certain transactions denominated in foreign currencies.  In addition, the Company has, in the past, reduced its exposure to increases in interest rates by entering into an interest rate swap contract.  These contracts have been designated as cash flow hedges.  The Company has also utilized futures contracts to protect the value of its copper inventory on hand and firm commitments to purchase copper through fair value hedges.  The Company accounts for financial derivative instruments by applying hedge accounting rules.  These rules require the Company to recognize all derivatives, as defined, as either assets or liabilities measured at fair value.  If the derivative is designated as a hedge, depending on the nature of the hedge, changes in the fair value of the derivative will either be offset against the change in fair value of the hedged assets, liabilities, or firm commitments through earnings or recognized as a component of OCI until the hedged item is recognized in earnings.  The ineffective portion of a derivative’s change in fair value will be immediately recognized in earnings.  Gains and losses recognized by the Company related to the ineffective portion of its hedging instruments, as well as gains and losses related to the portion of the hedging instruments excluded from the assessment of hedge effectiveness, were not material to the Company’s Consolidated Financial Statements.  Should these contracts no longer meet hedge criteria either through lack of effectiveness or because the hedged transaction is not probable of occurring, all deferred gains and losses related to the hedge will be immediately reclassified from OCI into earnings.  Depending on position, the unrealized gain or loss on futures contracts are classified as other current assets or other current liabilities in the Consolidated Balance Sheets, and any changes thereto are recorded in changes in assets and liabilities in the Consolidated Statements of Cash Flows.

The Company primarily executes derivative contracts with major financial institutions.  These counterparties expose the Company to credit risk in the event of non-performance.  The amount of such exposure is limited to the fair value of the contract plus the unpaid portion of amounts due to the Company pursuant to terms of the derivative instruments, if any.  If a downgrade in the credit rating of these counterparties occurs, management believes that this exposure is mitigated by provisions in the derivative arrangements which allow for the legal right of offset of any amounts due to the Company from the counterparties with any amounts payable to the counterparties by the Company.  As a result, management considers the risk of loss from counterparty default to be minimal.

Fair Value of Financial Instruments

The carrying amounts for cash and cash equivalents, accounts receivable, and accounts payable approximate fair value due to the short-term maturity of these instruments.  Primarily using market yields, the fair value of the Company’s debt instruments were estimated to be $197.0 million and $189.9 million at December 31, 2011 and December 25, 2010, respectively.  Fair value estimates are made at a specific point in time based on relevant market information about the financial instrument (Level 2 hierarchy as defined by ASC 820, Fair Value Measurements and Disclosures (ASC 820)).

Foreign Currency Translation

For foreign subsidiaries in which the functional currency is other than the U.S. dollar, balance sheet accounts are translated at exchange rates in effect at the end of the year and income statement accounts are translated at average exchange rates for the year.  Translation gains and losses are included in equity as a component of OCI.  Included in the Consolidated Statements of Income were transaction losses of $0.7 million in 2011, $2.2 million in 2010, and $0.2 million in 2009.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates, assumptions, and judgments that affect the amounts reported in the financial statements and accompanying notes.  Actual results could differ from those estimates.

F - 20

Recently Issued Accounting Standards

In June 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) No. 2011-05, Presentation of Comprehensive Income. (ASU 2011-05)  ASU 2011-05 eliminates the option to report other comprehensive income and its components in the consolidated statement of shareholder’s equity and comprehensive income and requires an entity to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement or in two separate but consecutive statements.  This pronouncement is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011.  The adoption of ASU 2011-05 concerns presentation and disclosure only and will not have an impact on the Company’s consolidated financial position, results of operations, or cash flows.

In May 2011, the FASB issued ASU No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and International Financial Reporting Standards (IFRS) (ASU 2011-04).  This pronouncement was issued to provide a consistent definition of fair value and ensure that the fair value measurement and disclosure requirements are similar between U.S. GAAP and IFRS.  ASU 2011-04 changes certain fair value measurement principles and enhances the disclosure requirements particularly for Level 3 fair value measurements.  This pronouncement is effective for reporting periods beginning on or after December 15, 2011.  The adoption of ASU 2011-04 is not expected to have a significant impact on the Company’s consolidated financial position, results of operations, or cash flows.

Note 2 – Inventories

(In thousands)	2011			2010
Raw materials and supplies	$	42,281		$	47,737
Work-in-process		38,420			34,784
Finished goods		143,648			131,921
Valuation reserves		(5,156	)		(4,550	)
Inventories	$	219,193		$	209,892

Inventories valued using the LIFO method totaled $15.1 million at December 31, 2011 and $21.2 million at December 25, 2010.  At December 31, 2011 and December 25, 2010, the approximate FIFO cost of such inventories was $101.2 million and $126.8 million, respectively.  Additionally, the Company valued certain inventories purchased for resale on an average cost basis.  The values of those inventories were $44.9 million at December 31, 2011 and $36.4 million at December 25, 2010.

During 2011, inventory quantities valued using the LIFO method declined which resulted in liquidation of LIFO inventory layers.  This liquidation resulted from intercompany sales; therefore the gain from the LIFO liquidation of approximately $8.0 million was deferred.  The deferred gain will decrease cost of sales in the future period that the inventory is sold to third parties.

At December 31, 2011, the FIFO value of inventory consigned to others was $2.9 million compared with $2.6 million at the end of 2010.

F - 21

Note 3 – Property, Plant, and Equipment, Net

(In thousands)	2011			2010
Land and land improvements	$	10,932		$	12,150
Buildings		110,456			115,919
Machinery and equipment		541,793			558,775
Construction in progress		10,137			4,445
		673,318			691,289
Less accumulated depreciation		(469,574	)		(461,791	)
Property, plant, and equipment, net	$	203,744		$	229,498

Note 4 – Goodwill

The changes in the carrying amount of goodwill were as follows:

(In thousands)		Plumbing & Refrigeration Segment			OEM Segment			Total
Balance at December 31, 2011, December 25, 2010, and December 26, 2009:
	Goodwill	$	141,684		$	9,971		$	151,655
	Accumulated impairment		(39,434	)		(9,971	)		(49,405	)
Goodwill, net		$	102,250		$	—		$	102,250

Because there are no observable inputs available (Level 3 hierarchy as defined by ASC 820), the Company estimates fair value of reporting units based on a combination of the market approach and income approach.  The market approach measures the fair value of a business through the analysis of publicly traded companies or recent sales of similar businesses.  The income approach uses a discounted cash flow model to estimate the fair value of reporting units based on expected cash flows (adjusted for capital investment required to support operations) and a terminal value.  This cash flow stream is discounted to its present value to arrive at a fair value for each reporting unit.  Future earnings are estimated using the Company’s most recent annual projection, applying a growth rate to future periods.  The discount rate selected for the reporting units is generally based on rates of return available from alternative investments of similar type and quality at the date of valuation.

There were no impairment charges resulting from the 2011 or 2010 impairment tests since the estimated fair value substantially exceeded the carrying value.  During 2009, the Company incurred impairment charges of $28.6 million.  In the Plumbing and Refrigeration segment, the Company recognized goodwill impairment charges of $18.6 million at Mueller Primaflow, the Company’s import distribution business located in the U.K.  In the OEM segment, the Company recognized goodwill impairment charges of $10.0 million at the following reporting units: (i) Impacts & Micro Gauge, (ii) Gas Products, and (iii) Mueller-Xingrong.  The impairment charges resulted from diminished operating results and cash flows due to weak demand and economic conditions of the markets in which the business units participate.  The Company reviewed the long-lived assets contained within the impaired reporting units, in accordance with the provisions of ASC 360, Property, Plant, and Equipment.  The Company determined that the undiscounted cash flows related to these assets or asset groups were in excess of their carrying value and therefore were not impaired.

The projections used to assist in the determination of the fair value of the reporting units were based on the Company’s most recent annual operating plan.  Those projections are directly impacted by the condition of the markets in which the Company’s businesses participate.  For the reporting units included in the Plumbing & Refrigeration segment, the projections reflect, among other things, the decline of the residential construction market over the past several years.  The OEM segment is also impacted by the residential construction market.  Additionally, this segment is linked to the automotive industry, which was adversely affected by the economic downturn in 2008 and 2009.

F - 22

Note 5 – Debt

(In thousands)	2011			2010
6% Subordinated Debentures, due 2014	$	148,176		$	148,176
2001 Series IRB’s with interest at 1.23%, due through 2021		9,250			10,000
Mueller-Xingrong line of credit with interest at 6.89%, due 2012		40,265			32,020
Other		50			50
		197,741			190,246
Less current portion of debt		(41,265	)		(32,020	)
Long-term debt	$	156,476		$	158,226

On October 26, 2004, as part of a Special Dividend, the Company issued $299.5 million in principal amount of its 6% Subordinated Debentures (the Debentures) due November 1, 2014.  Interest on the Debentures is payable semi-annually on May 1 and November 1.  The Company may repurchase the Debentures through open market transactions or through privately negotiated transactions.  Since issuance of the Debentures, the Company has repurchased and extinguished $151.3 million in principal amount of the Debentures, of which $0.5 million were repurchased in 2009.  The Debentures may be redeemed in whole at any time or in part from time-to-time at the option of the Company at a price of 100 percent of the principal amount.

On March 7, 2011, the Company executed a Credit Agreement (the Agreement) with a syndicate of banks establishing an unsecured $350 million revolving credit facility (the Credit Facility) which matures March 7, 2016.  Borrowings under the Credit Facility bear interest, at the Company’s option, at LIBOR or Base Rate as defined by the Credit Agreement, plus a variable premium.  LIBOR advances may be based upon the one, two, three, or six-month LIBOR.  The variable premium over LIBOR is based on certain financial ratios, and can range from 150 to 200 basis points for LIBOR based loans and 50 to 100 basis points for Base Rate loans.  At December 31, 2011, the premium was 175 basis points for LIBOR loans and 75 basis points for Base Rate loans.  Additionally, a facility fee is payable quarterly on the total commitment and varies from 25 to 37.5 basis points based upon the Company’s capitalization ratio.  Availability of funds under the Credit Facility is reduced by the amount of certain outstanding letters of credit, which are used to secure the Company's payment of insurance deductibles and certain retiree health benefits, totaling approximately $11.3 million at December 31, 2011.  Terms of the letters of credit are generally one year but are renewable annually.  There were no borrowings outstanding as of December 31, 2011.

On July 29, 2011, Mueller-Xingrong entered into a credit agreement (the JV Credit Agreement) with a syndicate of four banks establishing a secured RMB 350 million, or approximately $50 million revolving credit facility with a maturity date of July 28, 2012.  The JV Credit Agreement replaced the previous secured RMB 330 million financing agreement that was scheduled to mature on July 16, 2011.  Borrowings under the JV Credit Agreement are secured by the real property and equipment of Mueller-Xingrong and bear interest at 105 percent of the latest base-lending rate published by the People’s Bank of China (totaling 6.89 percent at December 31, 2011).

Borrowings under the Agreement and the JV Credit Agreement require, among other things, the satisfaction of certain financial ratios.  The JV Credit Agreement also requires lender consent for the payment of dividends.  At December 31, 2011, the Company was in compliance with all debt covenants.

Aggregate annual maturities of the Company’s debt are $41.3 million in 2012, $1.0 million in 2013, $149.2 million in 2014, $1.0 million in 2015, $1.0 million in 2016, and $4.2 million thereafter.  Interest paid in 2011, 2010, and 2009 was $10.8 million, $11.4 million, and $10.1 million, respectively.  No interest was capitalized in 2011, 2010, or 2009.

F - 23

Note 6 –Equity

The Company’s Board of Directors has extended, until October 2012, its authorization to repurchase up to ten million shares of the Company’s common stock through open market transactions or through privately negotiated transactions.  The Company has no obligation to purchase any shares and may cancel, suspend, or extend the time period for the purchase of shares at any time.  Any purchases will be funded primarily through existing cash and cash from operations.  The Company may hold any shares purchased in treasury or use a portion of the repurchased shares for its stock-based compensation plans, as well as for other corporate purposes.  From its initial authorization in 1999 through December 31, 2011, the Company had repurchased approximately 2.4 million shares under this authorization.

Components of accumulated other comprehensive loss are as follows:

(In thousands)	2011			2010
Cumulative foreign currency translation adjustment	$	(10,396	)	$	(9,480	)
Unrecognized prior service cost, net of income tax		(13	)		(13	)
Unrecognized actuarial net loss, net of income tax		(38,667	)		(28,289	)
Unrecognized derivative gains, net of income tax		(422	)		566
Unrealized gain on marketable securities, net of income tax		89			170
Accumulated other comprehensive loss	$	(49,409	)	$	(37,046	)

The change in cumulative foreign currency translation adjustment primarily relates to the Company’s investment in foreign subsidiaries and fluctuations in exchange rates between their local currencies and the U.S. dollar.  During 2011, the value of the Mexican peso decreased approximately 11.4 percent relative to the U.S. dollar.

Note 7 – Income Taxes

The components of income (loss) before income taxes were taxed under the following jurisdictions:

(In thousands)	2011		2010		2009
Domestic	$	118,208	$	88,262	$	36,478
Foreign		11,953		33,588		(13,349	)
Income before income taxes	$	130,161	$	121,850	$	23,129

F - 24

Income tax expense consists of the following:

(In thousands)	2011			2010			2009
Current tax expense:
Federal	$	43,127		$	32,132		$	14,834
Foreign		1,740			6,292			3,248
State and local		2,398			2,518			2,264
Current tax expense		47,265			40,942			20,346
Deferred tax (benefit) expense:
Federal		(6,480	)		(4,057	)		(4,321	)
Foreign		344			(2,036	)		3,893
State and local		1,946			(534	)		(2,126	)
Deferred tax (benefit) expense		(4,190	)		(6,627	)		(2,554	)
Income tax expense	$	43,075		$	34,315		$	17,792

No provision is made for U.S. income taxes applicable to undistributed earnings of foreign subsidiaries that are indefinitely reinvested in foreign operations.  It is not practicable to compute the potential deferred tax liability associated with these undistributed foreign earnings.

The difference between the reported income tax expense and a tax determined by applying the applicable U.S. federal statutory income tax rate to income before income taxes is reconciled as follows:

(In thousands)	2011			2010			2009
Expected income tax expense	$	45,556		$	42,647		$	8,095
State and local income tax, net of federal benefit		4,267			2,867			2,844
Effect of foreign statutory rate different from U.S. and other foreign adjustments		(560	)		(2,143	)		435
Valuation allowance changes		(443	)		(5,496	)		52
U.S. production activities deduction		(3,850	)		(2,975	)		(700	)
Gain on early retirement of debt		—			—			(45	)
Goodwill impairment		—			—			8,728
Tax contingency changes		(1,934	)		(1,516	)		(973	)
Other, net		39			931			(644	)
Income tax expense	$	43,075		$	34,315		$	17,792

During 2011, the Company released a valuation allowance of $0.4 million, or one cent per diluted share, due to the expectation that certain state tax attributes will be utilized.

During 2010, as a result of income from an insurance settlement in a foreign jurisdiction, the Company utilized a deferred tax asset and released a related valuation allowance of $5.5 million, or 15 cents per diluted share.  Additional valuation allowance releases totaled $1.1 million, or 3 cents per diluted share, due to the expectation that certain state tax attributes will be utilized.  The Company also added a valuation allowance of $1.1 million, or 3 cents per diluted share, to offset a foreign deferred tax asset generated during 2010.

F - 25

During 2009, the Company added valuation allowances of $3.6 million, or 10 cents per diluted share, due to the expectation that certain foreign deferred tax assets will not be realized.  This expense was partially offset by the reduction of a valuation allowance of $2.6 million, or 7 cents per diluted share, due to an increase in the expected future utilization of a state deferred tax asset and the net reduction of a valuation allowance of $0.9 million, or 2 cents per diluted share, related to a federal deferred tax asset.

The following summarizes the activity related to the Company’s unrecognized tax benefits:

(In thousands)	2011			2010
Beginning balance	$	8,565		$	11,282
Increases related to prior year tax positions		—			134
Increases related to current year tax positions		—			47
Decreases related to prior year tax positions		(802	)		(612	)
Decreases related to settlements with taxing authorities		—			(392	)
Decreases due to lapses in the statute of limitations		(1,191	)		(1,894	)
Ending balance	$	6,572		$	8,565

Federal income tax benefits associated with state tax uncertainties and interest on federal tax uncertainties are recorded as a deferred tax asset.  As of December 31, 2011, this asset totaled $0.2 million.  Of the $6.6 million total unrecognized tax benefits and $0.2 million of accrued interest, up to $4.0 million could affect the effective tax rate, if recognized.  Due to ongoing federal, state, and foreign income tax audits and potential lapses of the statutes of limitations in various taxing jurisdictions, it is reasonably possible that the Company’s unrecognized tax benefits and accrued interest may decrease in the next twelve months up to $3.6 million.

The Company includes interest and penalties related to income tax matters as a component of income tax expense.  Cumulative potential interest and penalties accrued related to unrecognized tax benefits totaled $0.2 million as of December 31, 2011 and $0.7 million as of December 25, 2010, without consideration of any applicable federal benefit.  The net reduction to income tax expense related to penalties and interest was $0.5 million in 2011, $0.2 million in 2010, and $0.7 million in 2009.

The Internal Revenue Service concluded the audit of the Company’s 2007 federal income tax return during 2010, the adjustments from which were immaterial.  Audit settlements of the 2004 and 2005 years in Mexico resulted in tax expense of $2.0 million, or 5 cents per diluted share during 2010.  The Company is currently under audit in various state jurisdictions.

The statute of limitations is still open for the Company’s federal tax return and most state income tax returns for the 2008 return and all subsequent years.  The statutes of limitations for certain state and foreign returns are also open for some earlier tax years due to ongoing audits and differing statute periods.  While the Company believes that it is adequately reserved for possible audit adjustments, the final resolution of these examinations cannot be determined with certainty and could result in final settlements that differ from current estimates.

F - 26

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are presented below:

(In thousands)	2011			2010
Deferred tax assets:
Accounts receivable	$	424		$	1,961
Inventories		11,075			7,885
Other postretirement benefits and accrued items		13,880			13,889
Pension		19,262			14,764
Other reserves		14,671			13,516
Federal and foreign tax attributes		7,421			6,651
State tax attributes, net of federal benefit		30,478			32,138
Other		2,296			2,062
Total deferred tax assets		99,507			92,866
Less valuation allowance		(29,705	)		(28,714	)
Deferred tax assets, net of valuation allowance		69,802			64,152
Deferred tax liabilities:
Property, plant, and equipment		44,757			48,330
Foreign withholding tax		—			719
Pension		8,589			8,621
Other		893			1,093
Total deferred tax liabilities		54,239			58,763
Net deferred tax asset	$	15,563		$	5,389

As of December 31, 2011, after consideration of the federal impact, the Company had state income tax credit carryforwards of $0.6 million with various expirations through 2026, and other state income tax credit carryforwards of $15.4 million with unlimited lives.  The Company had state net operating loss (NOL) carryforwards with potential tax benefits of $14.4 million expiring between 2014 and 2026.  The state tax credit and NOL carryforwards are offset by valuation allowances totaling $22.8 million.

As of December 31, 2011, the Company had federal and foreign tax attributes with potential tax benefits of $7.4 million, of which $2.2 million has an unlimited life and $5.2 million expire from 2013 to 2018.  These attributes were offset by valuation allowances of $6.9 million.

Income taxes paid were approximately $45.9 million in 2011, $46.0 million in 2010, and $20.0 million in 2009.

Note 8 – Other Current Liabilities

Included in other current liabilities were accrued discounts and allowances of $40.8 million at December 31, 2011 and $35.8 million at December 25, 2010, and taxes payable of $9.3 million at December 31, 2011 and $8.6 million at December 25, 2010.

F - 27

Note 9 – Employee Benefits

The Company sponsors several qualified and nonqualified pension plans and other postretirement benefit plans for certain of its employees.  The following tables provide a reconciliation of the changes in the plans' benefit obligations and the fair value of the plans' assets for 2011 and 2010, and a statement of the plans’ aggregate funded status as of December 31, 2011 and December 25, 2010 as follows:

	Pension Benefits						Other Benefits
(In thousands)	2011			2010			2011			2010
Change in benefit obligation:
Obligation at beginning of year	$	174,464		$	164,644		$	21,083		$	21,381
Service cost		1,394			823			344			275
Interest cost		9,051			9,374			993			1,334
Actuarial loss (gain)		6,077			12,417			(1,369	)		(697	)
Benefit payments		(10,942	)		(10,636	)		(937	)		(1,100	)
Effect of curtailments and settlements		—			—			—			(167	)
Foreign currency translation adjustment		297			(2,158	)		(169	)		57
Obligation at end of year		180,341			174,464			19,945			21,083
Change in fair value of plan assets:
Fair value of plan assets at beginning of year		156,215			147,703			—			—
Actual return on plan assets		(1,306	)		17,585			—			—
Employer contributions		3,094			3,042			937			1,100
Benefit payments		(10,942	)		(10,636	)		(937	)		(1,100	)
Foreign currency translation adjustment		441			(1,479	)		—			—
Fair value of plan assets at end of year		147,502			156,215			—			—
Underfunded status at end of year	$	(32,839	)	$	(18,249	)	$	(19,945	)	$	(21,083	)

The following represents amounts recognized in accumulated OCI (before the effect of income taxes) at December 31, 2011 and December 25, 2010:

	Pension Benefits				Other Benefits
(In thousands)	2011		2010		2011		2010
Unrecognized net actuarial loss	$	58,436	$	41,935	$	118	$	1,455
Unrecognized prior service cost		3		4		17		16

The Company sponsors one pension plan in the U.K. which comprised 36 percent and 35 percent of the above benefit obligation at December 31, 2011 and December 25, 2010, respectively, and 33 percent and 32 percent of the above plan assets at December 31, 2011 and December 25, 2010, respectively.

As of December 31, 2011, $3.7 million of the actuarial net loss will, through amortization, be recognized as components of net periodic benefit cost in 2012.

F - 28

In aggregate, the underfunded plans are recognized as a liability in the Consolidated Balance Sheets.  The amounts recognized as a liability are classified as current or long-term on a plan-by-plan basis.  Liabilities are classified as current to the extent the actuarial present value of benefits payable within the next 12 months exceed the fair value of plan assets, with all remaining amounts being classified as long-term.  As of December 31, 2011 and December 25, 2010, the total funded status of the plans recognized in the Consolidated Balance Sheets was as follows:

	Pension Benefits						Other Benefits
(In thousands)	2011			2010			2011			2010
Current liability	$	—		$	—		$	(1,333	)	$	(1,362	)
Long-term liability		(32,839	)		(18,249	)		(18,612	)		(19,721	)
Total underfunded status	$	(32,839	)	$	(18,249	)	$	(19,945	)	$	(21,083	)

The components of net periodic benefit cost are as follows:

(In thousands)	2011			2010			2009
Pension benefits:
Service cost	$	1,394		$	823		$	865
Interest cost		9,051			9,374			8,907
Expected return on plan assets		(11,569	)		(11,443	)		(10,732	)
Amortization of prior service cost		2			294			305
Amortization of net loss		2,346			2,307			833
Net periodic benefit cost	$	1,224		$	1,355		$	178
Other benefits:
Service cost	$	344		$	273		$	235
Interest cost		993			1,333			1,824
Amortization of prior service (credit) cost		(3	)		1			2
Amortization of net (gain) loss		(2	)		156			156
Effect of curtailments and settlements		—			25			28
Net periodic benefit cost	$	1,332		$	1,788		$	2,245

During 2009, the Company executed a Deed of Amendment (the Amendment) which froze the accrual of future benefits related to its U.K. pension plan.  Pursuant to U.K. law, past service accruals are adjusted for the effects of inflation after the execution of the Amendment.  The Amendment did not have a material impact on the Company’s results of operations.

Prior service costs are amortized on a straight-line basis over the average remaining service period of active participants.  Gains and losses in excess of 10 percent of the greater of the benefit obligation and the market-related value of assets are amortized over the average remaining service period of active participants.

The weighted average assumptions used in the measurement of the Company's benefit obligations are as follows:

	Pension Benefits				Other Benefits
	2011		2010		2011		2010
Discount rate		4.80%		5.25%		4.97%		5.39%
Expected long-term return on plan assets		7.11%		7.51%		N/A		N/A
Rate of compensation increases		N/A		N/A		5.04%		5.04%
Rate of inflation		3.00%		3.40%		N/A		N/A

F - 29

The weighted average assumptions used in the measurement of the Company's net periodic benefit cost are as follows:

	Pension Benefits									Other Benefits
	2011			2010			2009			2011			2010			2009
Discount rate		5.25	%		5.77	%		6.44	%		5.39	%		6.08	%		6.24	%
Expected long-term return on plan assets		7.51	%		8.04	%		8.12	%		N/A			N/A			N/A
Rate of compensation increases		3.40	%		3.75	%		2.75	%		5.04	%		5.04	%		5.04	%

The Company’s Mexican postretirement plans and the U.K. pension plan (prior to the execution of the Amendment) use the rate of compensation increase in the benefit formulas.  After execution of the Amendment, past service on the U.K. pension plan will be adjusted for the effects of inflation.  All other pension plans use benefit formulas based on length of service.

The annual assumed rate of increase in the per capita cost of covered benefits (i.e., health care cost trend rate) is assumed to range from 6.55 to 10.00 percent for 2012, gradually decrease to 5.00 percent for 2021, and remain at that level thereafter.  The health care cost trend rate assumption could have a significant effect on the amounts reported.  For example, increasing the assumed health care cost trend rates by one percentage point would increase the accumulated postretirement benefit obligation by $1.9 million and the service and interest cost components of net periodic postretirement benefit costs by $0.1 million for 2012.  Decreasing the assumed health care cost trend rates by one percentage point in each year would decrease the accumulated postretirement benefit obligation and the service and interest cost components of net periodic postretirement benefit costs for 2012 by $1.6 million and $0.1 million, respectively.

The weighted average asset allocation of the Company’s pension fund assets are as follows:

	Pension Plan Assets
Asset category	2011			2010
Equity securities (includes equity mutual funds)		80	%		73	%
Fixed income securities (includes fixed income mutual funds)		5			4
Cash and equivalents (includes money market funds)		8			16
Alternative investments		7			7
Total		100	%		100	%

At December 31, 2011, the Company’s target allocation, by asset category, of assets of its defined benefit pension plans was: (i) equity securities, including equity index funds – at least 60 percent; (ii) fixed income securities – not more than 25 percent; and (iii) alternative investments – not more than 20 percent.

The Company’s pension plan obligations are long-term and, accordingly, the plan assets are invested for the long-term.  The Company believes that a diversified portfolio of equity securities (both actively managed and index funds) and private equity funds have an acceptable risk-return profile that, over the long-term, is better than fixed income securities.  Consequently, the pension plan assets are heavily weighted to equity investments.  Plan assets are monitored periodically.  Based upon results, investment managers and/or asset classes are redeployed when considered necessary.  Expected rates of return on plan assets were determined based on historical market returns giving consideration to the targeted composition of each plan’s portfolio.  None of the plans’ assets are expected to be returned to the Company during the next fiscal year.

F - 30

The Company’s investments for its pension plans are reported at fair value.  The following methods and assumptions were used to estimate the fair value of the Company’s plan asset investments:

Cash and money market funds – Valued at cost, which approximates fair value.

Common stock – Valued at the closing price reported on the active market on which theindividual securities are traded.

Mutual funds – Valued at the net asset value of shares held by the plans at December 31, 2011, based upon quoted market prices.

Limited partnerships – Limited partnerships include investments in various Cayman Island multi-strategy hedge funds.  The plans’ investments in limited partnerships are valued at the estimated fair value of the class shares owned by the plans based upon the equity in the estimated fair value of those shares.  The estimated fair values of the limited partnerships are determined by the investment managers.  In determining fair value, the investment managers of the limited partnerships utilize theestimated net asset valuations of the underlying investment entities.  The underlyinginvestment entities value securities and other financial instruments on a mark-to-market or estimated fair value basis.  The estimated fair value is determined by the investmentmanagers based upon, among other things, the type of investments, purchase price, marketability, current financial condition, operating results, and other information.  The estimated fair values of substantially all of the investments of the underlying investment entities, which may include securities for which prices are not readily available, aredetermined by the investment managers or management of the respective underlying investment entities and may not reflect amounts that could be realized upon immediate sale.  Accordingly, the estimated fair values may differ significantly from the values that would have been used had a ready market existed for these investments.

The following table sets forth by level, within the fair value hierarchy, the assets of the plans at fair value as of December 31, 2011:

(In thousands)	Fair Value Measurements at December 31, 2011
	Level 1		Level 2		Level 3		Total
Cash and money market funds	$	11,707	$	—	$	—	$	11,707
Common stock (a)		58,498		—		—		58,498
Mutual funds (b)		19,054		47,098		—		66,152
Limited partnerships		—		—		11,145		11,145
Total	$	89,259	$	47,098	$	11,145	$	147,502

(a)	Approximately 88 percent of common stock represents investments in U.S. companies primarily in the health care, utilities, financials, consumer staples, industrials, information technology, and telecommunications sectors.  All investments in common stock are listed on U.S. stock exchanges.
(b)	Approximately 30 percent of mutual funds are actively managed funds and approximately 70 percent of mutual funds are index funds.  Additionally, 32 percent of the mutual funds’ assets are invested in U.S. equities, 57 percent in non-U.S. equities, and 11 percent in non-U.S. fixed income securities.

F - 31

The table below reflects the changes in the assets of the plan measured at fair value on a recurring basis using significant unobservable inputs (Level 3 hierarchy as defined by ASC 820) during the year ended December 31, 2011:

(In thousands)	Limited Partnerships
Balance, December 25, 2010	$	11,590
Purchases		1,068
Redemptions		(1,668	)
Net appreciation in fair value		155
Balance, December 31, 2011	$	11,145

Redemption of the plans’ investments in limited partnerships requires advance written notice.  One of the funds can be redeemed quarterly with 60 days’ notice, and the other fund can be redeemed monthly with 30 days’ notice.  There are no other restrictions on the redemption of the investments.

The assets of the plans do not include investments in securities issued by the Company.  The Company expects to contribute approximately $1.5 million to its pension plans and $1.3 million to its other postretirement benefit plans in 2012.  The Company expects future benefits to be paid from the plans as follows:

(In thousands)	Pension Benefits		Other Benefits
2012	$	10,311	$	1,333
2013		10,384		1,350
2014		10,513		1,370
2015		10,657		1,433
2016		10,783		1,386
2017-2021		53,809		7,328
Total	$	106,457	$	14,200

The Company contributes to the I.A.M. National Pension Fund, National Pension Plan (I.A.M. Plan), a multiemployer defined benefit plan.  Participation in the I.A.M. Plan was negotiated under the terms of two collective bargaining agreements in Port Huron, Michigan, the Local 218 I.A.M. and Local 44 U.A.W that expire on May 1, 2013 and July 20, 2013, respectively.  The Employer Identification Number for this plan is 51-6031295.

The risks of participating in multiemployer plans are different from single-employer plans in the following aspects:  (i) Assets contributed to the multiemployer plan by one employer may be used to provide benefits to employees of other participating employers, (ii) if a participating employer stops contributing to the plan, the underfunded obligations of the plan may be borne by the remaining participating employers, (iii) if the Company chooses to stop participating in the plan, the Company may be required to pay the plan an amount based on the underfunded status of the plan, referred to as a withdrawal liability.

The Company makes contributions to the I.A.M. Plan trusts that cover certain union employees; contributions by employees are not required nor are they permitted.  Contributions to the I.A.M. Plan were $0.9 million in 2011, $0.7 million in 2010, and $1.4 million in 2009.  The Company’s contributions are less than five percent of total employer contributions made to the I.A.M. Plan indicated in the most recently filed Form 5500.

F - 32

Under the Pension Protection Act of 2006, the I.A.M. Plan’s actuary must certify the plan’s zone status annually.  Plans in the red zone are generally less than 65 percent funded, plans in the yellow zone are less than 80 percent funded, and plans in the green zone are at least 80 percent funded.  If a plan is determined to be in endangered status, red zone or yellow zone, the plan’s trustees must develop a formal plan of corrective action, a Financial Improvement Plan and/or a Rehabilitation Plan.  For 2011 and 2010 the I.A.M. Plan was determined to have green zone status; therefore, no formal plan of corrective action is either pending or has been implemented.

The Company sponsors voluntary employee savings plans that qualify under Section 401(k) of the Internal Revenue Code of 1986.  Compensation expense for the Company’s matching contribution to the 401(k) plans was $3.0 million in 2011, $2.5 million in 2010, and $2.4 million in 2009.  The Company’s match is a cash contribution.  Participants direct the investment of their account balances by allocating among a range of asset classes including mutual funds (equity, fixed income, and balanced funds), and money market funds.  The plans do not allow direct investment in securities issued by the Company.

In October 1992, the Coal Industry Retiree Health Benefit Act of 1992 (the Act) was enacted.  The Act mandates a method of providing for postretirement benefits to the United Mine Workers of America (UMWA) current and retired employees, including some retirees who were never employed by the Company.  In October 1993, beneficiaries were assigned to the Company and the Company began its mandated contributions to the UMWA Combined Benefit Fund, a multiemployer trust.  Beginning in 1994, the Company was required to make contributions for assigned beneficiaries under an additional multiemployer trust created by the Act, the UMWA 1992 Benefit Plan.  The ultimate amount of the Company’s liability under the Act will vary due to factors which include, among other things, the validity, interpretation, and regulation of the Act, its joint and several obligation, the number of valid beneficiaries assigned, and the extent to which funding for this obligation will be satisfied by transfers of excess assets from the 1950 UMWA pension plan and transfers from the Abandoned Mine Reclamation Fund.  Contributions to the plan were $338 thousand, $478 thousand, and $475 thousand for the years ended December 31, 2011, December 25, 2010, and December 26, 2009, respectively.

Note 10 – Commitments and Contingencies

Environmental

The Company is subject to environmental standards imposed by federal, state, local, and foreign environmental laws and regulations.  For all properties, the Company has provided and charged to expense $0.4 million in 2011, $5.4 million in 2010, and $1.1 million in 2009 for pending environmental matters.  Environmental costs related to non-operating properties are classified as a component of other income (expense), net and costs related to operating properties are classified as cost of goods sold.  Environmental reserves totaled $22.9 million at December 31, 2011 and $23.9 million at December 25, 2010.  As of December 31, 2011, the Company expects to spend on existing environmental matters $1.3 million in 2012, $1.1 million in 2013, $1.0 million in 2014, $0.5 million in 2015, $0.5 million in 2016, and $9.0 million thereafter.  The timing of a potential payment for a $9.5 million settlement offer has not yet been determined.

Non-operating Properties

Southeast Kansas Sites

By letter dated October 10, 2006, the Kansas Department of Health and Environment (KDHE) advised the Company that environmental contamination has been identified at a former smelter site in southeast Kansas.  KDHE asserts that the Company is a corporate successor to an entity that is alleged to have owned and operated the smelter from 1915 to 1918.  The Company has since been advised of a possible connection between that same entity and two other former smelter sites in Kansas.  KDHE has requested that the Company and other potentially responsible parties (PRPs) negotiate a consent order with KDHE to address contamination at these sites.  The Company has participated in preliminary discussions with KDHE and the other PRPs.  The Company believes it is not liable for the contamination but as an alternative to litigation, the Company has entered into settlement negotiations with one of the other PRPs.  The negotiations are ongoing.  In 2008, the Company established a reserve of $9.5 million for this matter.  Due to the ongoing nature of negotiations, the timing of potential payment has not yet been determined.  The Company has also agreed to share the costs of a preliminary site assessment at one of the former smelter sites with two other PRPs and currently is negotiating the terms of an agreement and work plan with KDHE by which the PRPs would study the site without conceding liability.

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Eureka Mills Site

On December 2, 2010, the United States District Court for Utah entered a consent decree between the Company, the United States and the State of Utah.  The decree resolves the claims asserted by the U.S. and the State of Utah related to Eureka Mills Superfund Site located in Juab County, Utah.  The Company’s connection to the Eureka Mills Site is through land within the site that was owned by Sharon Steel Corporation (Sharon), its predecessor, and a 1979 transaction with UV Industries (UV) in which Sharon allegedly assumed certain of UV’s liabilities.  During 2010, the Company provided $2.5 million to settle its claims, of which $250 thousand was paid to the State of Utah in December 2010 and the remainder was paid to the U.S. in February 2011.

Shasta Area Mine Sites

Mining Remedial Recovery Company (MRRC), a wholly owned subsidiary, owns certain inactive mines in Shasta County, California.  MRRC has continued a program, begun in the late 1980’s, of sealing mine portals with concrete plugs in mine adits, which were discharging water.  The sealing program has achieved significant reductions in the metal load in discharges from these adits; however, additional reductions are required pursuant to an order issued by the California Regional Water Quality Control Board (QCB).  In response to a 1996 Order issued by the QCB, MRRC completed a feasibility study in 1997 describing measures designed to mitigate the effects of acid rock drainage.  In December 1998, the QCB modified the 1996 order extending MRRC’s time to comply with water quality standards.  In September 2002, the QCB adopted a new order requiring MRRC to adopt Best Management Practices (BMP) to control discharges of acid mine drainage.  That order extended the time to comply with water quality standards until September 2007.  During that time, implementation of BMP further reduced impacts of acid rock drainage; however, full compliance has not been achieved.  The QCB is presently renewing MRRC’s discharge permit and will concurrently issue a new order.  It is expected that the new permit will include an order requiring continued implementation of BMP through 2015 to address residual discharges of acid rock drainage.  At this site, MRRC spent approximately $0.6 million in 2011, $0.7 million in 2010 and $0.5 million in 2009, and estimates that it will spend between approximately $8.2 million and $11.5 million over the next 20 years.

Lead Refinery Site

U.S.S. Lead Refinery, Inc. (Lead Refinery), a non-operating wholly owned subsidiary of MRRC, has conducted corrective action and interim remedial activities and studies (collectively, Site Activities) at Lead Refinery’s East Chicago, Indiana site pursuant to the Resource Conservation and Recovery Act.  Site Activities, which began in December 1996, have been substantially concluded.  Lead Refinery is required to perform monitoring and maintenance activities with respect to Site Activities pursuant to a post-closure permit issued by the Indiana Department of Environmental Management (IDEM) effective as of January 22, 2008.  Lead Refinery spent approximately $0.1 million annually in 2011, 2010 and 2009 with respect to this site.  Approximate costs to comply with the post-closure permit, including associated general and administrative costs, are between $2.1 million and $3.3 million over the next 20 years.

On April 9, 2009, pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the U.S. Environmental Protection Agency (EPA) added the Lead Refinery site to the National Priorities List (NPL).  The NPL is a list of priority sites where the EPA has determined that there has been a release or threatened release of contaminants that warrant investigation and, if appropriate, remedial action.  The NPL does not assign liability to any party including the owner or operator of a property placed on the NPL.  The placement of a site on the NPL does not necessarily mean that remedial action must be taken.  On July 17, 2009, Lead Refinery received a written notice from the EPA that the agency is of the view that Lead Refinery may be a PRP under CERCLA in connection with the release or threat of release of hazardous substances including lead into a residential area adjacent to the site.  PRPs under CERCLA include current and former owners and operators of a site, persons who arranged for disposal or treatment of hazardous substances at a site, or persons who accepted hazardous substances for transport to a site.

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The Company monitors EPA releases and periodically communicates with the EPA to inquire of the status of the Lead Refinery site.  As of December 31, 2011, the EPA has not conducted an investigation of the Lead Refinery site, proposed remedies, or informed Lead Refinery that it is a PRP at the Lead Refinery site.  Until the extent of remedial action is determined, the Company is unable to determine the likelihood of a material adverse outcome or the amount or range of a potential loss with respect to placement of this site on the NPL or in connection with the notice of potential liability concerning the residential area.  Lead Refinery lacks the financial resources needed to undertake any investigations or remedial action that may be required by the EPA pursuant to CERCLA.

Operating Properties

Mueller Copper Tube Products, Inc.

In 1999, Mueller Copper Tube Products, Inc. (MCTP), a wholly owned subsidiary, commenced a cleanup and remediation of soil and groundwater at its Wynne, Arkansas plant.  MCTP is currently removing trichloroethylene, a cleaning solvent formerly used by MCTP, from the soil and groundwater.  On August 30, 2000, MCTP received approval of its Final Comprehensive Investigation Report and Storm Water Drainage Investigation Report addressing the treatment of soils and groundwater from the Arkansas Department of Environmental Quality (ADEQ).  The Company established a reserve for this project in connection with the acquisition of MCTP in 1998.  Effective November 17, 2008, MCTP entered into a Settlement Agreement and Administrative Order by Consent to submit a Supplemental Investigation Work Plan (SIWP) and subsequent Final Remediation Work Plan for the site.  By letter dated January 20, 2010, ADEQ approved the SIWP as submitted, with changes acceptable to the Company.  On December 16, 2011, MCTP entered into an amended Administrative Order by Consent to prepare and implement a revised Remediation Work Plan regarding final remediation for the Site.  Costs to implement the work plans, including associated general and administrative costs, are approximately $0.9 million over the next 10 years.

Belding, Michigan Lead Matters

In 2009 and 2010, in response to requests from the Michigan Department of Environmental Quality (MDEQ), Extruded Metals, Inc. (Extruded), a wholly owned subsidiary, conducted stack emissions testing of the stationary sources at its Belding, Michigan facility (the Belding Facility).  The results of tests on the West Chip Dryer showed non-compliance with certain emission limitations in the facility’s air use permit for that process, including the limitation for lead.  Modifications were made to the emissions control equipment on the West Chip Dryer, and subsequent testing demonstrated all stationary sources at the Belding Facility to be in compliance with the requirements of their air use permits.

In December 2009 and August 2010, the MDEQ issued a notice of violation and an enforcement notice with respect to the prior West Chip Dryer permit violations.  Extruded entered into an administrative consent order (ACO) with the MDEQ to resolve the allegations contained in the notices.  Under the ACO, the MDEQ imposed and Extruded has paid a civil fine in the amount of $176 thousand as part of the resolution of those allegations.  Extruded has satisfied all of its obligations under the ACO.

Ambient air monitoring conducted by the MDEQ downwind of the Belding Facility demonstrated periodic exceedances of the new National Ambient Air Quality Standards (NAAQS) for lead.  The MDEQ requested that Extruded submit an application for a new air use permit for the Belding Facility that would ensure compliance with that new federal standard.  The application was submitted to the MDEQ on January 21, 2011, and the new air permit was issued on October 20, 2011.  The permit requires Extruded to raise the stack height on the facility’s West Chip Dryer that is presently in operation, and on the East Chip Dryer that is presently not in operations, before it is returned to operation.  Extruded has raised the stack height on the West Chip Dryer, and has no present plans to return the East Chip Dryer to operation.

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In October 2010, the MDEQ conducted testing of lead levels in soils on properties upwind and downwind of the Belding Facility.  Results of that testing showed exceedances of the Michigan generic residential direct contact cleanup criteria for lead on a number of the downwind properties.  Extruded has investigated the extent of this condition and performed remediation to the extent required by environmental laws and in accordance with a plan approved by the MDEQ in April 2011.  In January 2012, Extruded submitted a final Certification Report to the MDEQ documenting its completion of that remediation.  The Company provided $0.4 million in 2010 for this matter, and is pursuing potential remedies from the previous owner.  The Company does not expect additional material losses associated with these environmental matters.

In November 2010, Extruded received a request for information under Section 114(a) of the Clean Air Act from the EPA.  The focus of the EPA’s information request was the Belding Facility’s compliance with the National Emissions Standards for Hazardous Air Pollutants for Secondary Nonferrous Metals Processing Area Sources, 40 C.F.R. § 63.11462 (Subpart TTTTTT).  Extruded responded to the information request and advised the EPA of its position that it was not subject to regulation under Subpart TTTTTT.  The state has requested that Extruded request an applicability determination from the EPA.  The request has been made and Extruded is awaiting a response.

The estimates contained in the environmental reserves are based on assumptions that are highly subjective.  Many of the remedial activities performed by the Company are pursuant to performance-based obligations imposed by various regulatory bodies in which certain standards regarding levels of contaminants must be met.  The most subjective assumption that affects the estimates at these sites is the assumed length of time to comply with the remedial requirements set by the regulatory authorities.  This assumption is subject to change based on the regulatory environment, unanticipated delays and events that could limit access to these sites, unforeseen negative sampling results, and other factors.  Changes in any of these factors could have a material impact on future environmental expense.

Carrier ACR Tube Action

The Company has been named as a defendant in a pending litigation (the Carrier ACR Tube Action) brought by Carrier Corporation, Carrier S.A., and Carrier Italia S.p.A. (collectively, Carrier), direct purchasers of copper tube.  The Carrier ACR Tube Action was filed in March 2006 in the United States District Court for the Western District of Tennessee.  The Carrier ACR Tube Action alleges anticompetitive activities with respect to the sale of copper tube used in, among other things, the manufacturing of air-conditioning and refrigeration units.  The Company and Mueller Europe, Limited (Mueller Europe) are named in the Carrier ACR Tube Action.  The Carrier ACR Tube Action seeks monetary and other relief.

In July 2007, the Carrier ACR Tube Action was dismissed in its entirety for lack of subject matter jurisdiction as to all defendants.  In August 2007, plaintiffs filed with the United States Court of Appeals for the Sixth Circuit a notice of appeal from the judgment and order dismissing the complaint in the Carrier ACR Tube Action.  The Company and Mueller Europe filed notices of cross-appeal in August 2007.

In October 2007, Carrier filed with the United States Court of Appeals for the Sixth Circuit a motion to dismiss the cross-appeals, which the Court denied in December 2007.  Briefing on the appeals occurred in May 2009 and oral argument took place in October 2009.

Pursuant to stipulations of dismissal, the Court dismissed the Company’s and Mueller Europe’s cross-appeals against Carrier, and Carrier’s appeal as against the Company and Mueller Europe, in November 2011.  This matter is now resolved.

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United States Department of Commerce Antidumping Review

On December 24, 2008, the United States Department of Commerce (DOC) initiated an antidumping administrative review of the antidumping duty order covering circular welded non-alloy steel pipe and tube from Mexico to determine the final antidumping duties owed on U.S. imports during the period November 1, 2007, through October 31, 2008, by certain subsidiaries of the Company.  On April 19, 2010, the DOC published the final results of this review and assigned Mueller Comercial de Mexico, S. de R.L. de C.V. (Mueller Comercial) an antidumping duty rate of 48.3 percent.  The Company has appealed the final determination to the U.S. Court of International Trade (CIT).  On December 16, 2011, the CIT issued a decision to remand the final results back to DOC to reconsider its decision.  DOC is ordered to file its remand results with the CIT by April 16, 2012.  The Company anticipates that certain of its subsidiaries will incur antidumping duties on subject imports made during the period of review and, as such, established a reserve of approximately $4.2 million for this matter.

On December 23, 2009, the DOC initiated an antidumping administrative review of the antidumping duty order covering circular welded non-alloy steel pipe and tube from Mexico for the November 1, 2008, through October 31, 2009, period of review.  The DOC selected Mueller Comercial as a respondent for this period of review.  On June 21, 2011, the DOC published the final results of this review and assigned Mueller Comercial an antidumping duty rate of 19.8 percent.  On August 22, 2011, the Company appealed the final results to the CIT.  The Company anticipates that certain of its subsidiaries will incur antidumping duties on subject imports made during the period of review and, as such, established a reserve of approximately $1.0 million for this matter.

On December 28, 2010, the DOC initiated an antidumping administrative review of the antidumping duty order covering circular welded non-alloy steel pipe and tube from Mexico for the November 1, 2009, through October 31, 2010, period of review.  The DOC selected Mueller Comercial as a respondent for this period of review.  In August 2011, the DOC issued a preliminary determination to rescind the review based on a finding that Mueller Comercial did not ship subject merchandise to the United States during the relevant period of review.  By the end of the year, the DOC should issue a final determination which, if the result mirrors the preliminary determination, would result in zero antidumping liability for the Company and its subsidiaries for imports made during the period of review.  Until the final determination is issued, however, the Company cannot estimate the impact, if any, that this matter will have on its financial position, results of operations, or cash flows.

United States Department of Commerce and United States International Trade Commission Antidumping Investigations

On September 30, 2009, two subsidiaries of the Company, along with Cerro Flow Products, Inc. and KobeWieland Copper Products LLC (collectively, Petitioners), jointly filed antidumping petitions with the DOC and the U.S. International Trade Commission (ITC) alleging that imports of seamless refined copper pipe and tube from China and Mexico (subject imports) were being sold at less than fair value and were causing material injury (and threatening material injury) to the domestic industry.  On October 1, 2010, the DOC published its final affirmative determinations, finding antidumping rates from 24.89 percent to 27.16 percent for Mexico (as amended), and from 11.25 percent to 60.85 percent for China.

On November 22, 2010, the ITC issued its final affirmative determination that subject imports from China and Mexico threatened material injury to the domestic industry.  Also on November 22, 2010, the DOC published antidumping orders, with the effect that importers were required to post antidumping cash deposits at rates ranging from 24.89 percent to 27.16 percent (for subject imports from Mexico) and from 11.25 percent to 60.85 percent (for subject imports from China).

On December 22, 2010, certain Mexican parties requested panel reviews under the North American Free Trade Agreement (NAFTA) in order to appeal the ITC final determination as to Mexico.  Following a period of litigation, the last of the Mexican parties withdrew its allegations on December 8, 2011, with the effect that the ITC final determination as to Mexico shall remain in force.

On July 7, 2011, the DOC initiated a new shipper review of certain entries from a Mexican processor of copper tube, GD Affiliates S.de R.L. de C.V., in order to establish a company-specific dumping rate for this company based on the period November 22, 2010 through April 30, 2011.  The review is expected to be completed sometime in 2012.  At this time, the Company is unable to know the final disposition of the review.

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On December 31, 2011, the DOC initiated administrative reviews of several Chinese and Mexican copper tube producers and/or exporters to the United States — including  IUSA, S.A. de C.V. (Mexico), GD Affiliates S. de R.L. de C.V. (Mexico), Hong Kong GD Trading Co., Ltd. (Mexico), Nacional de Cobre, S.A. de C.V. (Mexico), Golden Dragon Holding Hong Kong International Co., Ltd. (China), Golden Dragon Precise Copper Tube Group, Inc. (China), Hong Kong GD Trading Co., Ltd. (China), Hong Kong Hailiang Metal Trading Limited (China), Luvata Alltop Zhongshan Ltd. (China), Luvata Tube Zhongshan Ltd. (China), Ningbo Jintian Copper Tube Co., Ltd. (China), Shanghai Hailiang Copper Co., Ltd. (China), Sinochem Ningbo Import & Export Co., Ltd. (China), Sinochem Ningbo Ltd. (China), Zhejiang Hailiang Co., Ltd. (China), Zhejiang Jiahe Pipes Inc. (China), and Zhejiang Naile Copper Co., Ltd. (China) — in order to establish company-specific dumping rates based on the period November 22, 2010 through October 31, 2011.  On February 22, 2012, the DOC rescinded its review of IUSA, S.A. de C.V. (Mexico).  The reviews are expected to be completed sometime in 2013.  At this time, the Company is unable to know the final disposition of these reviews.

Supplier Litigation

On May 6, 2011, the Company and two of its subsidiaries, Mueller Streamline Co. (Mueller Streamline) and B&K Industries, Inc. (B&K), filed a lawsuit in federal district court in Los Angeles, California against a former supplier, Xiamen Lota International Co., Ltd (Xiamen Lota), its U.S. sales representative (Lota USA), and certain other persons.  The lawsuit alleges that the defendants gave Peter D. Berkman, a former executive of the Company and B&K, an undisclosed interest in Lota USA, and made payments and promises of payment to him, in return for Peter Berkman maintaining the Company as a customer, increasing purchasing levels, and acquiescing to excessive pricing for Xiamen Lota products.  The lawsuit alleges violations of 18 U.S.C. §§ 1962(c) and (d) and state law unfair competition.  The lawsuit seeks compensatory, treble and punitive damages, and other appropriate relief.  All of the foreign defendants have been served under the Hague Convention and Xiamen Lota has withdrawn its motion contesting service of process (filed July 1, 2011).  On January 4, 2012, the foreign defendants filed a motion to dismiss the Company’s complaint for failure to state a claim, and also joined in Lota USA’s pending motion to dismiss (filed July 1, 2011).  Both motions to dismiss are scheduled to be heard on April 9, 2012.  On December 16, 2011, the Court granted Lota USA’s motion to disqualify the Company’s counsel and the Company has retained new counsel to represent it going forward in the lawsuit.  The Company believes that a material loss resulting from this litigation is remote.

On August 2, 2011, Xiamen Lota, and Lota Corp. filed suit in federal district court in Memphis, Tennessee against Mueller Industries, Inc. and Mueller Streamline (collectively Mueller).  This matter involves allegations of breach of contract and unjust enrichment arising out of dealing pursuant to which Xiamen Lota supplied Mueller with plumbing products.  The complaint seeks compensatory damages, pre-judgment interest, and other equitable relief.  Mueller intends to vigorously defend this action.  In this regard, Mueller has counterclaimed for breach of contract, breach of warranty and misrepresentation.  The Company believes that a material loss resulting from this litigation is remote.

On September 30, 2011, a lawsuit was filed in federal district court in Chicago, Illinois, against B&K, by  Xiamen Lota, and two of its employees, Yongqiang He (He) and Chuanbao Zhu (Zhu).  The lawsuit alleges that B&K, a subsidiary of the Company, failed to name He as an inventor on three United States patents, U.S. patent nos. 6,880,573 ('573 Patent), 7,140,390 ('390 Patent), and 7,549,444 ('444 Patent) awarded to employees of B&K, and subsequently assigned to B&K.  The '573 Patent, '390 Patent and '444 Patent pertain to frost-free valve assemblies sold by B&K.  The lawsuit also alleges that B&K failed to name Zhu as an inventor on the '390 Patent.  According to the complaint, He and Zhu have assigned any rights they might have in the three patents to Xiamen Lota.  The claims in the lawsuit include correction of inventorship (Counts I-VI), unjust enrichment (Count VII), and tortious interference with prospective economic advantage (Count VIII), and seek unspecified damages from B&K.  The Company has answered Counts I-VI, denying all substantive allegations, and has asserted affirmative defenses.  The Company has moved to dismiss Counts VII and VIII.  The Company's motion to dismiss Counts VII and VIII remains pending.  The Company believes that a material loss resulting from this litigation is remote.

Litigation Settlement

The Company negotiated a settlement with Peter D. Berkman and Jeffrey A. Berkman, former executives of the Company and B&K Industries, Inc. (B&K), a wholly owned subsidiary of the Company, that required the payment of $10.5 million in cash by Peter Berkman, Jeffrey Berkman, and Homewerks Worldwide LLC to the Company.  During 2011, the Company recorded a gain of $10.5 million upon receipt of the settlement proceeds.

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Leases

The Company leases certain facilities, vehicles, and equipment under operating leases expiring on various dates through 2024.  The lease payments under these agreements aggregate to approximately $7.8 million in 2012, $6.7 million in 2013, $5.0 million in 2014, $4.5 million in 2015, $3.8 million in 2016, and $6.4 million thereafter.  Total lease expense amounted to $8.8 million in 2011, $8.0 million in 2010, and $8.6 million in 2009.

Consulting Agreement

During 2004, the Company entered into a consulting and non-compete agreement (the Consulting Agreement) with Harvey L. Karp, Chairman of the Board.  The Consulting Agreement provides for post-employment services to be provided by Mr. Karp for a six-year period.  During the first four years of the Consulting Agreement, an annual fee equal to two-thirds of the executive’s Final Base Compensation (as defined in the Consulting Agreement) will be payable.  During the final two years, the annual fee is set at one-third of the executive’s Final Base Compensation.  During the term of the Consulting Agreement, the executive agrees not to engage in Competitive Activity (as defined in the Consulting Agreement) and will be entitled to receive certain other benefits from the Company.  The maximum amount payable under the Consulting Agreement is $6.7 million.

On November 3, 2011, Mr. Karp notified the Company that he would resign as Chairman of the Company and as a member of the Board of Directors of the Company effective as of December 31, 2011.  Following his resignation, on January 1, 2012, the Consulting Agreement commenced.  Based upon the value of the non-compete provisions of the Consulting Agreement, the Company will expense the value of the Consulting Agreement over its term.

Other

In November 2008, the Company’s copper tube facility in Bilston, Great Britain, was damaged by fire and production was curtailed; the losses were covered by property and business interruption insurance.  During 2010, the Company settled the claim with its insurer for total proceeds of $35.3 million, net of the deductible of $0.5 million.  As a result of the settlement with its insurer, all proceeds received and all costs previously deferred (which were recorded as a receivable in prior periods) were recognized, resulting in a pre-tax gain of $21.2 million in 2010.  

In July 2009, there was an explosion at the Company’s copper tube facility in Fulton, Mississippi.  Production was curtailed for approximately one week for cleanup and repairs to building structures.  Certain production equipment was also extensively damaged.  In 2010, the Company recorded a gain of $1.5 million related to the property damage claim.  In January 2012, the Company settled the business interruption portion of this claim and received $1.5 million; this gain will be recognized in the first quarter of 2012.

In September 2011, a portion of the Company’s Wynne, Arkansas, manufacturing operation was damaged by fire.  There were no reported injuries.  Certain inventories, production equipment, and building structures were extensively damaged requiring further assessment, which is ongoing; rehabilitation alternatives are also being evaluated.  The total value of the loss, including business interruption, cannot be determined at this time, but is expected to be covered by property and business interruption insurance subject to customary deductibles.  As a result of the fire, the Company reclassified to a receivable $2.7 million representing the book value of inventories and $9.6 million representing the net book value of certain production equipment and building structures that were damaged.  The Company also recorded a receivable of $2.5 million for clean-up and other out of pocket costs incurred to date.  Any proceeds received for property damage in excess of the net book value of the related property will be recognized upon settlement of the insurance claim.  The Company has received an advance of $10.0 million from the insurance company for this claim resulting in a net receivable of $4.8 million, classified as accounts receivable on the Consolidated Balance Sheet at December 31, 2011.  In January 2012, the Company received a second advance from the insurance company of $40 million.  The Company has deferred recognition of direct, identifiable costs associated with this matter.  These costs will be recognized upon settlement of the insurance claim.

Additionally, the Company is involved in certain litigation as a result of claims that arose in the ordinary course of business, which management believes will not have a material adverse effect on the Company's financial position, results of operations, or cash flows.  The Company may also realize the benefit of certain legal claims and litigation in the future; these gain contingencies are not recognized in the Consolidated Financial Statements.

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Note 11 – Other Income (Expense), Net

(In thousands)	2011			2010			2009
Interest income	$	711		$	829		$	1,080
Gain on early retirement of debt		—			—			128
Gain (loss) on disposal of properties, net		202			(756	)		(683	)
Environmental expense, non-operating properties		(330	)		(3,467	)		(644	)
Other		1,329			744			991
Other income (expense), net	$	1,912		$	(2,650	)	$	872

Note 12 – Stock-Based Compensation

In May 2009, the Company’s stockholders approved the 2009 Stock Incentive Plan (2009 Plan).  The 2009 Plan authorizes the award of stock-based incentives to employees and non-employee directors.  Awards include restricted stock, stock appreciation rights, and options to purchase stock at specified prices during specified time periods.  The 2009 Plan reserved 750 thousand shares of common stock, which may be issued or transferred upon exercise of stock options.

During the years ended December 31, 2011, December 25, 2010, and December 26, 2009, the Company recognized stock-based compensation, as a component of selling, general, and administrative expense, in its Consolidated Statements of Income of $3.5 million, $2.9 million, and $2.6 million, respectively.  The related tax benefit was $0.9 million in 2011, $0.7 million in 2010, and $0.6 million in 2009.

The fair value of the restricted stock awards equals the fair value of the Company’s stock on the grant date and is amortized into compensation expense evenly over the vesting period of each award.  At December 31, 2011 and December 25, 2010, 229 thousand and 132 thousand restricted stock awards were outstanding and unvested, respectively.  During 2011, the Company granted 132 thousand restricted stock awards and 35 thousand restricted stock awards vested.  The aggregate intrinsic value of outstanding and unvested awards was $7.4 million at December 31, 2011.  Total compensation for restricted stock awards not yet recognized was $5.7 million with an average recognition period of four years.

Under existing plans, the Company may grant options to purchase shares of common stock at prices not less than the fair market value of the stock on the date of grant.  Generally, the options vest annually in equal increments over a five-year period beginning one year from the date of grant.  Any unexercised options expire after not more than ten years.  The fair value of each grant is estimated as a single award and amortized into compensation expense on a straight-line basis over its vesting period.  The weighted average grant-date fair value of options granted during 2011, 2010, and 2009 were $12.53, $7.63, and $7.60, respectively.

The Company estimates the fair value of all stock option awards as of the grant date by applying the Black-Scholes-Merton option pricing model.  The use of this valuation model in the determination of compensation expense involves certain assumptions that are judgmental and/or highly sensitive including the expected life of the option, stock price volatility, risk-free interest rate, and dividend yield.  Additionally, forfeitures are estimated at the time of valuation and reduce expense ratably over the vesting period.  The forfeiture rate, which was estimated at 17 percent for 2011, 2010, and 2009, is adjusted periodically based on actual forfeitures.  The weighted average of key assumptions used in determining the fair value of options granted and a discussion of the methodology used to develop each assumption are as follows:

	2011			2010			2009
Expected term	6.3 years			6.3 years			6.3 years
Expected price volatility		0.358			0.353			0.334
Risk-free interest rate		1.7	%		2.4	%		3.3	%
Dividend yield		1.1	%		1.6	%		1.7	%

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Expected term – This is the period of time estimated based on historical experience over which the options granted are expected to remain outstanding.  An increase in the expected term will increase compensation expense.

Expected price volatility – This is a measure of the amount by which a price has fluctuated or is expected to fluctuate.  The Company uses actual historical changes in the market value of its stock to calculate the volatility assumption.  Daily market value changes from the date of grant over a past period representative of the expected term of the options are used.  An increase in the expected price volatility rate will increase compensation expense.

Risk-free interest rate – This is the U.S. Treasury rate for the week of the grant, having a term representative of the expected term of the options.  An increase in the risk-free rate will increase compensation expense.

Dividend yield – This rate is the annual dividends per share as a percentage of the Company’s stock price.  An increase in the dividend yield will decrease compensation expense.

The Company generally issues treasury shares when options are exercised.  A summary of the stock option activity and related information follows:

(Shares in thousands)	Options			Weighted Average Exercise Price
Outstanding at December 27, 2008		2,084		$	26.43
Granted		226			23.79
Exercised		(477	)		19.16
Cancelled		(80	)		28.42
Expired		(149	)		32.50
Outstanding at December 26, 2009		1,604			27.56
Granted		233			24.70
Exercised		(148	)		19.26
Expired		(24	)		30.78
Outstanding at December 25, 2010		1,665			27.85
Granted		31			37.54
Exercised		(464	)		27.91
Outstanding at December 31, 2011		1,232			28.07

At December 31, 2011, the aggregate intrinsic value of all outstanding options was $13.2 million with a weighted average remaining contractual term of 5.8 years.  Of the outstanding options, 747 thousand are currently exercisable with an aggregate intrinsic value of $7.3 million, a weighted average exercise price of $29.07, and a weighted average remaining contractual term of 4.6 years.  The total intrinsic value of options exercised was $6.6 million, $1.3 million, and $1.4 million in 2011, 2010, and 2009, respectively.  The total compensation expense not yet recognized related to non-vested awards at December 31, 2011 was $8.5 million with an average expense recognition period of 3.4 years.

Approximately 746 thousand shares were available for future stock incentive awards at December 31, 2011.

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Note 13 – Derivative Instruments and Hedging Activities

Cash Flow Hedges

Copper and brass represent the largest component of the Company’s variable costs of production.  The cost of these materials is subject to global market fluctuations caused by factors beyond the Company’s control.  The Company occasionally enters into forward fixed-price arrangements with certain customers; the risk of these arrangements is generally managed with commodity futures contracts.  The Company accounts for these futures contracts in accordance with ASC 815, Derivatives and Hedging (ASC 815).  These futures contracts have been designated as cash flow hedges.  The fair value of open futures contracts are recognized as a component of OCI until the position is closed which corresponds to the period when the related hedged transaction is recognized in earnings.  Should these contracts no longer meet hedge criteria in accordance with ASC 815, either through lack of effectiveness or because the hedged transaction is no longer probable of occurring, all deferred gains and losses related to the hedge would be immediately reclassified from OCI into earnings as a component of other income.  In the next nine months, the Company will reclassify into earnings realized gains or losses of cash flow hedges; at December 31, 2011, the net value included in OCI was approximately a $675 thousand loss.

At December 31, 2011, the Company held open futures contracts to purchase approximately $21.1 million of copper over the next nine months related to fixed price sales orders.  The fair value of those futures contracts was a $679 thousand loss position, which was determined by obtaining quoted market prices (Level 1 hierarchy as defined by ASC 820).  

Derivative instruments designated as cash flow hedges under ASC 815 are reflected in the Consolidated Financial Statements as follows:

	December 31, 2011
(In thousands)	Location		Fair value
Commodity contracts	Other current assets:	Gain positions	$	85
		Loss positions		(25	)
	Other current liabilities:	Gain positions		339
		Loss positions		(1,078	)

	December 25, 2010
(In thousands)	Location		Fair value
Commodity contracts	Other current assets:	Gain positions	$	891

The following tables summarize activities related to the Company’s derivative instruments, classified as cash flow hedges in accordance with ASC 815:

	Gain (Loss) Recognized in Accumulated OCI (Effective Portion), Net of Tax
			For the Year Ended
(In thousands)			December 31, 2011				December 25, 2010
Commodity contracts		$		(427	)	$		1,684

F - 42

	(Gain) Loss Reclassified from Accumulated OCI into Income (Effective Portion), Net of Tax
		For the Year Ended
(In thousands)	Location	December 31, 2011			December 25, 2010
Commodity contracts	Cost of goods sold	$	(561	)	$	(1,308	)

The Company enters into futures contracts that closely match the terms of the underlying transactions.  As a result, the ineffective portion of the hedge contracts is not material to the Consolidated Statements of Income.  

Fair Value Hedges

The Company occasionally enters into futures contracts in order to protect the value of inventory against market fluctuations.  The Company accounts for these futures contracts in accordance with ASC 815.  These futures contracts have been designated as fair value hedges.  For fair value hedges, the changes in value of the hedging derivative, as well as the changes in value of the related hedged item due to the risk being hedged, are reflected in current earnings.  Hedge ineffectiveness is reflected in current earnings in the period in which it occurs.  At December 31, 2011, the Company held no open contracts designated as fair value hedges.

The following tables summarize the gains (losses) on the Company's fair value hedges:

	Gains (Losses) on Fair Value Hedges for the Year Ended December 31, 2011
	Location	Amount
(In thousands)
Gain on the derivatives in designated and qualifying fair value hedges:
Commodity Contracts	Cost of goods sold	$	4,509
(Loss) on the hedged item in designated and qualifying fair value hedges:
Inventory	Cost of goods sold	$	(4,344	)

The Company enters into futures contracts that closely match the terms of the underlying transactions.  As a result, the ineffective portion of the open cash flow and fair value hedge contracts through December 31, 2011, was not material to the Condensed Consolidated Statements of Income.

The Company does not offset fair value of amounts for derivative instruments and fair value amounts recognized for the right to reclaim cash collateral.  At December 31, 2011, the Company had recorded restricted cash of $1.9 million related to open futures contracts.

Note 14 – Acquisitions

On December 28, 2010, the Company purchased certain assets of Tube Forming, L.P. (TFI).  TFI primarily serves the HVAC market in North America.  The acquired assets include inventories, production equipment as well as factory leaseholds.  TFI has operations in Carrollton, Texas, and Guadalupe, Mexico, where it produces precision copper return bends and crossovers, and custom-made tube components and brazed assemblies, including manifolds and headers.  TFI's estimated net sales for 2010 were approximately $35 million.  Mueller paid approximately $6.9 million for the assets subject to certain adjustments, which was funded with existing cash on hand.  The acquisition of TFI extends the Company’s product offering within the OEM segment.

F - 43

On August 6, 2010, the Company purchased certain assets of Linesets, Inc., a manufacturer of assembled line sets with operations in Phoenix, Arizona and Atlanta, Georgia.  This acquisition expands the Company’s current line sets business, a part of the Plumbing & Refrigeration segment.  The purchase price of approximately $2.1 million was allocated primarily to inventory and heavy machinery and equipment.

Note 15 – Industry Segments

The Company’s reportable segments are Plumbing & Refrigeration and OEM.  For disclosure purposes, as permitted under ASC 280, Segment Reporting, certain operating segments are aggregated into reportable segments.  The Plumbing & Refrigeration segment is composed of Standard Products (SPD), European Operations, and Mexican Operations.  The OEM segment is composed of Industrial Products (IPD), Engineered Products (EPD), and Mueller-Xingrong.  These segments are classified primarily by the markets for their products.  Performance of segments is generally evaluated by their operating income.  Intersegment transactions are generally conducted on an arms-length basis.

SPD manufactures copper tube and fittings, plastic fittings, plastic pipe, and line sets.  These products are manufactured in the U.S.  Outside the U.S., the Company’s European Operations manufacture copper tube, which is sold in Europe and the Middle East.  SPD also imports and resells brass and plastic plumbing valves, malleable iron fittings, faucets, and plumbing specialty products.  Mexican Operations consist of pipe nipple manufacturing and import distribution businesses including product lines of malleable iron fittings and other plumbing specialties.  The European Operations consist of copper tube manufacturing and the import distribution of fittings, valves, and plumbing specialties primarily in the U.K. and Ireland.  The Plumbing & Refrigeration segment’s products are sold primarily to plumbing, refrigeration, and air-conditioning wholesalers, hardware wholesalers and co-ops, and building product retailers.

IPD manufactures brass rod, impact extrusions, and forgings as well as a variety of end products including plumbing brass, automotive components, valves, and fittings.  EPD manufactures and fabricates valves and assemblies for the refrigeration, air-conditioning, gas appliance, and barbecue grill markets and specialty copper, copper-alloy, and aluminum tube.  Mueller-Xingrong manufactures engineered copper tube primarily for air-conditioning applications.  These products are sold primarily to OEM customers.

Summarized product line, geographic, and segment information is shown in the following tables.  Geographic sales data indicates the location from which products are shipped.  Unallocated expenses include general corporate expenses, plus certain charges or credits not included in segment activity.

Worldwide sales to one customer in the Plumbing & Refrigeration segment totaled $175.1 million in 2009, which represented 11 percent of the Company's consolidated net sales.  No other customer accounted for more than 10 percent of consolidated net sales.  During 2010 and 2011, no one customer exceeded 10 percent of worldwide sales.

Net Sales by Major Product Line:

(In thousands)	2011		2010		2009
Tube and fittings	$	1,082,150	$	898,615	$	686,102
Brass rod and forgings		662,369		581,660		418,376
OEM components, tube & assemblies		401,623		327,092		213,905
Valves and plumbing specialties		217,985		204,074		198,333
Other		53,670		48,356		30,509
	$	2,417,797	$	2,059,797	$	1,547,225

F - 44

Geographic Information:

(In thousands)	2011		2010		2009
Net sales:
United States	$	1,830,001	$	1,567,606	$	1,208,757
United Kingdom		272,809		214,643		173,223
Other		314,987		277,548		165,245
	$	2,417,797	$	2,059,797	$	1,547,225
Long-lived assets:
United States	$	267,060	$	289,714	$	309,986
United Kingdom		23,962		24,088		27,312
Other		29,883		32,880		34,000
	$	320,905	$	346,682	$	371,298

Net assets of foreign operations at December 31, 2011 included $112.0 million in the United Kingdom, $45.3 million in Mexico, $47.9 million in Luxembourg, and $27.3 million in China.

Segment Information:

	For the Year Ended December 31, 2011
(In thousands)	Plumbing & Refrigeration Segment		OEM Segment		Corporate and Eliminations			Total
Net sales	$	1,330,435	$	1,119,796	$	(32,434	)	$	2,417,797
Cost of goods sold		1,139,932		1,007,654		(31,909	)		2,115,677
Depreciation and amortization		20,947		14,634		1,284			36,865
Selling, general, and administrative expense		84,795		24,838		26,320			135,953
Litigation settlement		—		—		(10,500	)		(10,500	)
Operating income		84,761		72,670		(17,629	)		139,802
Interest expense									(11,553	)
Other expense, net									1,912
Income before income taxes								$	130,161

F - 45

Segment Information (continued):

	For the Year Ended December 25, 2010
(In thousands)	Plumbing & Refrigeration Segment			OEM Segment		Corporate and Eliminations			Total
Net sales	$	1,115,614		$	958,855	$	(14,672	)	$	2,059,797
Cost of goods sold		951,170			837,649		(14,008	)		1,774,811
Depreciation and amortization		24,940			14,300		1,124			40,364
Selling, general, and administrative expense		78,573			26,789		25,849			131,211
Insurance settlements		(22,736	)		—		—			(22,736	)
Operating income		83,667			80,117		(27,637	)		136,147
Interest expense										(11,647	)
Other expense, net										(2,650	)
Income before income taxes									$	121,850

	For the Year Ended December 26, 2009
(In thousands)	Plumbing & Refrigeration Segment		OEM Segment		Corporate and Eliminations			Total
Net sales	$	892,071	$	664,088	$	(8,934	)	$	1,547,225
Cost of goods sold		744,880		590,361		(8,219	)		1,327,022
Depreciation and amortization		26,289		14,208		1,071			41,568
Selling, general, and administrative expense		74,397		20,501		21,762			116,660
Impairment charges		19,462		10,293		—			29,755
Operating income		27,043		28,725		(23,548	)		32,220
Interest expense									(9,963	)
Other income, net									872
Income before income taxes								$	23,129

(In thousands)	2011		2010		2009
Expenditures for long-lived assets (including business acquisitions):
Plumbing & Refrigeration	$	12,686	$	13,774	$	7,876
OEM		12,586		6,684		6,066
General corporate		361		241		—
	$	25,633	$	20,699	$	13,942
Segment assets:
Plumbing & Refrigeration	$	532,458	$	574,671	$	542,834
OEM		296,997		296,978		284,480
General corporate		518,149		387,347		352,827
	$	1,347,604	$	1,258,996	$	1,180,141

F - 46

Note 16 – Quarterly Financial Information (Unaudited)

	First			Second		Third		Fourth
(In thousands, except per share data)	Quarter			Quarter		Quarter		Quarter
2011
Net sales	$	687,681		$	652,923	$	585,809	$	491,384
Gross profit (1)		97,807			79,046		61,825		63,442
Consolidated net income		40,542	(2)		22,731		10,741		13,072
Net income attributable to Mueller Industries, Inc.		40,587			22,331		10,475		12,928
Basic earnings per share		1.08			0.59		0.28		0.34
Diluted earnings per share		1.07			0.59		0.27		0.34
Dividends per share		0.10			0.10		0.10		0.10
2010
Net sales	$	485,268		$	540,388	$	507,240	$	526,901
Gross profit (1)		72,220			73,743		69,643		69,380
Consolidated net income		34,799	(3)		16,037		18,747		17,952
Net income attributable to Mueller Industries, Inc.		33,958			15,558		18,909		17,746
Basic earnings per share		0.90			0.41		0.50		0.47
Diluted earnings per share		0.90			0.41		0.50		0.47
Dividends per share		0.10			0.10		0.10		0.10

 (1) Gross profit is net sales less cost of goods sold, which excludes depreciation and amortization.

 (2) First quarter of 2011 includes gain from litigation settlement of $6.8 million after tax.

 (3) First quarter of 2010 includes gain from insurance settlement of $23.3 million after tax.

F - 47

Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of Mueller Industries, Inc.

We have audited the accompanying consolidated balance sheets of Mueller Industries, Inc. as of December 31, 2011 and December 25, 2010, and the related consolidated statements of income, changes in equity and cash flows for each of the three years in the period ended December 31, 2011. Our audits also included the financial statement schedule listed in the Index at Item 15(a). These financial statements and schedule are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements and schedule based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States).  Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Mueller Industries, Inc. at December 31, 2011 and December 25, 2010, and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2011, in conformity with U.S. generally accepted accounting principles. Also, in our opinion, the related financial statement schedule, when considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the information set forth therein.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), Mueller Industries, Inc.’s internal control over financial reporting as of December 31, 2011, based on criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 28, 2012 expressed an unqualified opinion thereon.

	/S/ Ernst & Young LLP
Memphis, Tennessee
February 28, 2012

F - 48

MUELLER INDUSTRIES, INC.

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

Years Ended December 31, 2011, December 25, 2010, and December 26, 2009

			Additions
	Balance at		Charged to									Balance
	beginning		costs and			Other						at end
(In thousands)	of year		expenses			additions				Deductions		of year
2011
Allowance for doubtful accounts	$	5,447	$	(229	)	$	(2	)	(1)	$	3,652	$	1,564
Environmental reserves	$	23,902	$	392		$	—			$	1,402	$	22,892
Valuation allowance for deferred tax assets	$	28,714	$	(443	)	$	1,434		(2)	$	—	$	29,705
2010
Allowance for doubtful accounts	$	5,947	$	4,763		$	111		(1)	$	5,374	$	5,447
Environmental reserves	$	23,268	$	5,378		$	(6	)		$	4,738	$	23,902
Valuation allowance for deferred tax assets	$	33,812	$	(5,496	)	$	398			$	—	$	28,714
2009
Allowance for doubtful accounts	$	6,690	$	506		$	85		(1)	$	1,334	$	5,947
Environmental reserves	$	23,248	$	1,087		$	5			$	1,072	$	23,268
Valuation allowance for deferred tax assets	$	32,624	$	52		$	1,136		(2)	$	—	$	33,812

(1) Other consists primarily of bad debt recoveries as well as the effect of fluctuating foreign currency exchange rates in all years presented.

(2) Other includes the additions to valuation allowances in which previously unrecorded gross deferred tax assets and valuation allowances were recognized.

F - 49

EXHIBIT INDEX

Exhibits	Description
10.16	Amendment to the Mueller Industries, Inc. 2002 Stock Option Plan, dated July 11, 2011.
10.17	Amendment to the Mueller Industries, Inc. 2009 Stock Incentive Plan, dated July 11, 2011.
10.18	Mueller Industries, Inc. 2011 Annual Bonus Plan.
10.19	Summary description of the Registrant’s 2012 incentive plan for certain key employees.
21.0	Subsidiaries of the Registrant.
23.0	Consent of Independent Registered Public Accounting Firm.
31.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended.
31.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as amended.
32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase
101.DEF	XBRL Taxonomy Extension Definition Linkbase
101.INS	XBRL Instance Document
101.LAB	XBRL Taxonomy Extension Lable Linkbase
101.PRE	XBRL Taxonomy Extension Presentation Linkbase
101.SCH	XBRL Taxonomy Extension Schema

EX-10.16

    ex10_16.htm
    
    
    

EX-10.17

Exhibit 10.17

AMENDMENT TO THE

MUELLER INDUSTRIES, INC.

2009 STOCK INCENTIVE PLAN

July 11, 2011

WHEREAS, Mueller Industries, Inc. (the “Company”) maintains the Mueller Industries, Inc. 2009 Stock Incentive Plan (the “Plan”); and

WHEREAS, pursuant to Section 15(a) of the Plan, the board of directors of the Company (the “Board”) may amend the Plan at any time; and

WHEREAS, the Board has determined it to be in the best interests of the Company to amend the Plan.

NOW, THEREFORE, the Plan is hereby amended as follows:

1.	Section 2(p) thereof shall be amended and restated in its entirety as follows:
	“(p)           “Fair Market Value” means, as of any date when the Stock is listed on one or more national securities exchanges, the mean between the highest and lowest sale prices of the Stock reported on the principal national securities exchange on which such Stock is listed and traded on the date of determination, or, if there is no such sale on that date, then on the last preceding date on which such a sale was reported.  If the Stock is not listed on an exchange, or representative quotes are not otherwise available, the Fair Market Value shall mean the amount determined by the Board in good faith, and in a manner consistent with Section 409A of the Code, to be the fair market value per share of Stock.”
2.	Governing Law.  This Amendment shall be construed and governed by the laws of the State of Delaware, without giving effect to conflicts of laws principles thereof which might refer such interpretations to the laws of a different state or jurisdiction.
3.	Full Force and Effect of the Plan.  Except as specifically amended herein, all other provisions of the Plan shall remain in full force and effect in accordance with its terms.

Mueller Industries, Inc.

Board of Directors

July 11, 2011

EX-10.18

Exhibit 10.18

MUELLER INDUSTRIES, INC.

2011 ANNUAL BONUS PLAN

1.Purposes.

The purposes of the Mueller Industries, Inc. 2011 Annual Bonus Plan are to attract and retain highly-qualified executives by providing appropriate performance-based short-term incentive awards and to serve as a qualified performance-based compensation program under Code Section 162(m), in order to preserve the Company’s tax deduction for compensation paid under the Plan to Covered Employees.

2.Definitions.

The following terms, as used herein, shall have the following meanings:

(a)“Board” shall mean the Board of Directors of the Company.

(b)“Bonus” shall mean any annual incentive bonus award granted pursuant to the Plan, the payment of which shall be contingent upon the attainment of Performance Goals with respect to a Plan Year.

(c)“Chairman” shall mean the Chairman of the Board.

(d)“Chief Executive Officer” shall mean the Chief Executive Officer of the Company.

(e)“Code” shall mean the Internal Revenue Code of 1986, as amended from time to time.

(f)“Committee” shall mean the Compensation Committee of the Board.

(g)“Company” shall mean Mueller Industries, Inc., a corporation organized under the laws of the State of Delaware, or any successor corporation.

(h)“Covered Employee” shall have the meaning set forth in Section 162(m)(3) of the Code (or any successor provision), as modified by Notice 2007-49 or any successor thereto.

(i)“Disability” means a medical condition that the Committee has determined renders a Participant unable to perform the normal duties of the Participant’s position with the Company.  The Committee may, in its sole discretion, obtain a medical opinion from a physician selected by the Committee before any determination of Disability is made.

(j)“Participant” shall mean the Chairman and Chief Executive Officer, and any other employee of the Company or a Subsidiary selected by the Committee to participate in the Plan.

(k)“Performance Goals” shall mean the criteria and objectives which must be met during the Plan Year as a condition of the Participant’s receipt of payment with respect to a Bonus, as described in Section 3 hereof.

(l)“Plan” shall mean this Mueller Industries, Inc. 2011 Annual Bonus Plan, as amended from time to time.

(m)“Plan Year” shall mean the Company’s fiscal year.

(n)“Subsidiary” shall mean any subsidiary of the Company which is designated by the Board or the Committee to have its employees participate in the Plan.

3.Performance Goals.

Performance Goals for each Plan Year shall be established by the Committee not later than the ninetieth (90th) day of such Plan Year.  Such Performance Goals may be expressed in terms of one or more of the following:  (a) pre-tax earnings; (b) earnings per share; (c) operating income; (d) net sales; (e) total shareholder return; (f) net income; (g) funds from operations; (h) funds from operations multiple; (i) earnings before interest expense, taxes, depreciation and amortization (“EBITDA”); (j) pretax operating earnings after interest expense and before bonuses, service fees and extraordinary or special items; (k) operating margin; (l) return on equity; (m) return on capital; (n) return on investment; (o) operating earnings; (p) working capital; (q) ratio of debt to shareholders’ equity; (r) market capitalization; (s) market capitalization defined by the Company’s line of credit; (t) growth in funds from operations; (u) growth in net operating income; (v) return on invested capital; (w) inventory levels or inventory turnover; (x) total net sales; (y) total gross profit or total gross profit percentage; (z) operating cash flow or free cash flow; (aa) economic value added; (bb) pre-interest and pre-tax expense return on average invested capital, which may be expressed on a current value basis; (cc) accounts receivable (measured in terms of days sales outstanding); (dd) operating expenses; (ee) sales growth; (ff) profit before taxes or profit after taxes less the company’s cost of capital; and/or (gg) net revenue.  To the extent applicable, any such Performance Goal shall be subject to any pre-established adjustments for specific accounting items and determined in accordance with the Company’s audited financial statements and generally accepted accounting principles and reported upon by the Company’s independent accountants.  Any such Performance Goals may relate to one or any combination of two or more of corporate, group, unit, division, affiliate or individual performance.  In any event, such Performance Goals shall be established so that a third party having knowledge of the relevant facts could determine whether such Performance Goals have been met.  Performance Goals may include a threshold level of performance below which no Bonus payment shall be made, levels of performance at which specified percentages of the target Bonus shall be paid, and a maximum level of performance above which no additional Bonus shall be paid.  The Performance Goals established by the Committee may be (but need not be) different for each Plan Year and different Performance Goals may be applicable to different Participants.

2

4.Bonuses.

(a)In General.  For each Plan Year commencing with the Plan Year ending December 31, 2011, the Committee shall, no later than the ninety (90) days following commencement of such Plan Year, specify the Performance Goals applicable to such Plan Year and the amount of the target Bonus for each Participant with respect to such Plan Year.  A Participant’s target Bonus for each Plan Year shall be expressed as a dollar amount or as a percentage of such Participant’s base salary for such Plan Year; provided, that if expressed as a percentage of a Participant’s base salary, the amount of such base salary for purposes of the Plan may not be increased for such Plan Year after the date on which the target Bonus is so established.  Payment of a Bonus for a particular Plan Year shall be made only if and to the extent the Performance Goals with respect to such Plan Year are attained and, if a Participant’s employment with the Company terminates for any reason other than death or Disability during any Plan Year, then the Participant will immediately cease participation in the Plan and will not have the opportunity to earn a Bonus for such Plan Year; provided, that the Committee in its sole discretion may provide for the payment of a Bonus following a termination of a Participant’s employment (other than by reason of death or Disability) if the payment of such Bonus is subject to the achievement of the applicable Performance Goals with respect to the Plan Year of such termination.  The foregoing notwithstanding, if a Participant’s employment with the Company terminates by reason of death or Disability during any Plan Year, the Committee, in its sole discretion, may determine to pay all or a prorated portion of any Bonus relating to the Plan Year in which the Participant’s employment terminates.  Unless such a determination is made in accordance with the previous sentence, upon a Participant’s termination of employment on account of death or Disability, the Participant shall immediately cease participation in the Bonus Plan and shall not be entitled to earn a Bonus for such Plan Year.  The actual amount of a Bonus payable under the Plan shall be determined as a percentage of the Participant’s target Bonus, which percentage may vary depending upon the extent to which the Performance Goals have been attained and may be less than, greater than, or equal to the target Bonus.  The Committee may, in its discretion, reduce or eliminate the amount payable to any Participant, in each case based upon such factors as the Committee may deem relevant, but shall not increase the amount payable to any Participant for any Plan Year.

(b)Limitation on Bonuses.  Notwithstanding anything to the contrary contained in this Plan, the maximum Bonus which may be earned by any Participant under the Plan in respect of any Plan Year shall not exceed $2,500,000.

(c)Time of Payment.  All payments in respect of Bonuses granted under this Section 4 shall be made no later than two and one-half (2½) months following the end of the Plan Year.  In the case of Participants who are Covered Employees, unless otherwise determined by the Committee in connection with terminations of employment such payments shall be made only after achievement of the Performance Goals has been certified by the Committee in writing.

(d)Form of Payment.  Payment of a Participant’s Bonus for any Plan Year shall be made in cash.

3

5.Administration.

(a)The Plan shall be administered by the Committee.  The Committee shall have the authority in its sole discretion, subject to and not inconsistent with the express provisions of the Plan, to administer the Plan and to exercise all the powers and authorities either specifically granted to it under the Plan or necessary or advisable in the administration of the Plan, including, without limitation, the authority to grant Bonuses; to determine the persons to whom and the time or times at which Bonuses shall be granted; to determine the terms, conditions, restrictions and performance criteria relating to any Bonus; to make adjustments in the Performance Goals in response to changes in applicable laws, regulations, or accounting principles to the extent not inconsistent with Code Section 162(m) and the regulations thereunder; to the extent provided in Section 4(a) hereof, to reduce the compensation payable upon attainment of Performance Goals; to construe and interpret the Plan and any Bonus; to prescribe, amend and rescind rules and regulations relating to the Plan; and to make all other determinations deemed necessary or advisable for the administration of the Plan.

(b)The Committee shall consist of two or more persons each of whom is an “outside director” within the meaning of Code Section 162(m).  The Committee may appoint a chairperson and a secretary and may make such rules and regulations for the conduct of its business as it shall deem advisable, and shall keep minutes of its meetings.  All determinations of the Committee shall be made by a majority of its members either present in person or participating by conference telephone at a meeting or by unanimous written consent.  The Committee may delegate to one or more of its members or to one or more agents such administrative duties as it may deem advisable, and the Committee or any person to whom it has delegated duties as aforesaid may employ one or more persons to render advice with respect to any responsibility the Committee or such person may have under the Plan.  All decisions, determinations and interpretations of the Committee shall be final and binding on all persons, including the Company, the Participant (or any person claiming any rights under the Plan from or through any Participant) and any shareholder.

(c)No member of the Board or the Committee shall be liable for any action taken or determination made in good faith with respect to the Plan or any Bonus granted hereunder.

6.General Provisions.

(a)Compliance with Legal Requirements.  The Plan and the granting of Bonuses, and the other obligations of the Company under the Plan shall be subject to all applicable federal and state laws, rules and regulations, and to such approvals by any regulatory or governmental agency as may be required.

(b)No Right To Continued Employment.  Nothing in the Plan or in any Bonus granted shall confer upon any Participant the right to continue in the employ of the Company or any of its Subsidiaries or to be entitled to any remuneration or benefits not set forth in the Plan or to interfere with or limit in any way the right of the Company to terminate such Participant’s employment.

4

(c)Withholding Taxes.  The Company or Subsidiary employing any Participant shall deduct from all payments and distributions under the Plan any taxes required to be withheld by federal, state or local governments.

(d)Amendment and Termination of the Plan.  The Board may at any time and from time to time alter, amend, suspend, or terminate the Plan in whole or in part; provided, however, that no amendment which requires shareholder approval in order for the Plan to continue to comply with Code Section 162(m) shall be effective unless the same shall be approved by the requisite vote of the shareholders of the Company.  Additionally, the Committee may make such amendments as it deems necessary to comply with other applicable laws, rules and regulations.  Notwithstanding the foregoing, no amendment shall affect adversely any of the rights of any Participant, without such Participant’s consent, under any Bonus theretofore granted under the Plan.

(e)Participant Rights.  No Participant shall have any claim to be granted any Bonus under the Plan, and there is no obligation for uniformity of treatment among Participants.

(f)Unfunded Status of Bonuses.  The Plan is intended to constitute an “unfunded” plan for incentive compensation.  With respect to any payments which at any time are not yet made to a Participant pursuant to a Bonus, nothing contained in the Plan or any Bonus shall give any such Participant any rights that are greater than those of a general creditor of the Company.

(g)Governing Law.  The Plan and the rights of all persons claiming hereunder shall be construed and determined in accordance with the laws of the State of Delaware without giving effect to the choice of law principles thereof.

(h)Effective Date.  The Plan shall first be effective with respect to the 2011 Plan Year, but only if the Plan shall have been approved at the 2011 annual meeting by the requisite vote approval of the shareholders of the Company.

(i)Interpretation.  The Plan is designed and intended to comply with Code Section 162(m), to the extent applicable, and all provisions hereof shall be construed in a manner to so comply.

(j)Term.  No Bonus may be granted under the Plan with respect to any Plan Year after the Plan Year ending December 26, 2015, unless the Plan is reapproved by the stockholders of the Company at the Company’s 2016 Annual Meeting of Stockholders.  The Plan shall remain in effect until it has been terminated pursuant to Section 6(d) hereof.  The Plan must be reapproved by the stockholders of the Company every five years in compliance with Treasury Regulation §1.162-27(e)(4)(vi).

*           *           *

5

EX-10.19

Exhibit 10.19

2012 INCENTIVE PLAN FOR CERTAIN KEY EMPLOYEES

The Company has a discretionary annual incentive program under which exempt salaried employees may earn cash payments based on a percentage of base annual salary.  The actual percent is based on a variety of guidelines including performance levels of the respective business units primarily measured by operating income subject to certain adjustments.

The payment to an employee is based upon (i) their assigned grade level, (ii) actual company earnings achieved relative to a pre-determined target, which is adjusted upward if company performance exceeds target and reduced if company performance is less than target, and (iii) base salary paid during the fiscal year.

EX-21.0

Exhibit 21.0

MUELLER INDUSTRIES, INC.

List of Subsidiaries

	State or Country
Subsidiary*	of Incorporation
Mueller Brass Holding Company, Inc.	Delaware
Mueller Brass Co. (Assumed name: Mueller Brass Products)	Michigan
Extruded Metals, Inc. (Effective February 27, 2007)	Delaware
Mueller Industrial Realty Co.	Michigan
Itawamba Industrial Gas Company, Inc.	Mississippi
Streamline Copper & Brass Ltd.	Canada
Mueller Plastics Holding Company, Inc.	Ohio
Mueller Plastics Corporation, Inc.	Delaware
MPC Foundry, Inc.	Delaware
MPC Machine Shop, Inc.	Delaware
Mueller Brass Forging Company, Inc.	Delaware
Mueller Copper Tube Company, Inc.	Delaware
Mueller Fittings, LLC	Mississippi
Mueller Fittings Company, Inc.	Michigan
MCTC, LLC	Mississippi
Mueller East, Inc.	Delaware
Mueller Formed Tube Company, Inc.	Delaware
Mueller Impacts Company, Inc.	Delaware
Mueller Press Company, Inc.	Mississippi
Mueller Refrigeration Products Company, Inc.	Delaware
Mueller LBHC, Inc.	Delaware
Lincoln Brass Works, Inc. (Assumed name: Mueller Gas Products)	Michigan
Overstreet-Hughes, Co., Inc.	Tennessee
Mueller Refrigeration LLC	Michigan
Mueller Refrigeration Holding Company, Inc.	Delaware
Mueller Streamline Co.	Delaware
Precision Tube Company, Inc.	Pennsylvania
Southland Pipe Nipples Company, Inc.	Texas
Mueller Tool and Machine, Inc.	Delaware
Mueller Casting Company, Inc.	Delaware
Mueller Packaging, LLC	Mississippi
Micro Gauge, Inc.	Michigan
Microgauge Machining, Inc.	Michigan
Propipe Technologies, Inc. (Assumed name: Mueller Gas Products)	Ohio
WTC Holding Company	Michigan
Muellux Holding Company I SARL	Luxembourg
Muellux Holding Company II SARL	Luxembourg
Mueller Europe, Limited	United Kingdom
Mueller Primaflow Limited	United Kingdom
Brasscapri Limited	United Kingdom
Primaflow Limited	United Kingdom
KX Company Limited	United Kingdom
Brassware Sales Limited	United Kingdom
Instox Limited	United Kingdom

	State or Country
Subsidiary*	of Incorporation
DENO Investment Company, Inc.	Michigan
Mueller de Mexico, S.A. de C.V. (1)	Mexico
DENO Holding Company, Inc.	Michigan
DENO Acquisition EURL	France
Mueller Europe, S.A. (2)	France
B & K Industries, Inc.	Illinois
Mueller Copper Tube Products, Inc.	Delaware
Linesets, Inc.	Delaware
Arava Natural Resources Company, Inc.	Delaware
United States Fuel Company	Nevada
King Coal Company	Utah
Canco Oil & Gas Ltd.	Alberta, Canada
Aegis Oil and Gas Leasing Ltd.	Alberta, Canada
Bayard Mining Corp.	Delaware
Washington Mining Company	Maine
Amwest Exploration Company	Delaware
USSRAM Exploration Company	Maine
White Knob Mining Company	Idaho
Arava Exploration Company	Colorado
Summit Systems, Inc.	Delaware
Kennet Company Limited	Bermuda
Mining Remedial Recovery Company	Delaware
Carpentertown Coal & Coke Company	Pennsylvania
U.S.S. Lead Refinery, Inc.	Maine
Leon Water Enterprises, Inc. (50%)	Texas
Macomber Construction Company	Ohio
Macomber, Incorporated	Ohio
Macomber Building and Land Corporation	Delaware
DENO Investment Company II, Inc.	Michigan
MII Financial Corporation	Michigan
Mueller Streamline Holding S.L.U.	Spain
WTC HoldCo I, LLC	Delaware
WTC HoldCo II, LLC	Delaware
Mueller Comercial de Mexico S. de R.L. de C.V. (3)	Mexico
NICNA Mexico, S. de R.L. de C.V. (4)	Mexico
NICNA Mexico Servicios, S. de R.L. de C.V. (4)	Mexico
NICNA Mexico Proyectos, S. de R.L. de C.V. (4)	Mexico
NICNA Mexico Comercial, S. de R.L. de C.V. (4)	Mexico
NICNA Mexico Maquinaria, S. de R.L. de C.V. (4)	Mexico
Mueller Streamline II, LLC	Delaware
Changzhou Mueller Refrigerant Valve Manufacturing Co., Ltd.	China
Mueller Streamline Trading, LLC	Delaware
Mueller Streamline China, LLC	Delaware
Jiangsu Mueller-Xingrong Copper Industries Limited (5)	China

2

*All subsidiaries are 100% owned, except as shown.

(1)  Owned by DENO Investment Company, Inc. (99.8%) and Mueller Streamline Co. (.2%).

(2)  On March 3, 2003, Mueller Europe S.A. filed a petition for liquidation with the Commercial Court of Provins Province, France and, on March 4, the Court declared the entity to be in liquidation.  Less than 1% owned by non-affiliated individuals.

(3)  Owned by Mueller Streamline Holding S.L.U. (1.55%), WTC HoldCo I, LLC ( 91.45% ), and  WTC HoldCo II, LLC ( 7% ).

(4)  Less than 1% of the outstanding common stock is owned by WTC HoldCo I, LLC.

(5)  Owned by Mueller Streamline China, LLC (50.5%).

3

EX-23.0

Exhibit 23.0

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:

1)   Form S-8 No. 333-160718 pertaining to the Mueller Industries, Inc. 2009 Stock Incentive Plan,

2)   Form S-8 No. 333-138413 pertaining to the Mueller Industries, Inc. 2002 Stock Option Plan,

3)   Form S-8 No. 333-91238 pertaining to the Mueller Industries, Inc. 2002 Stock Option Plan,

4)   Form S-8 No. 333-52325 pertaining to the Mueller Industries, Inc. 1998 Stock Option Plan, and

5)   Form S-8 No. 33-54705 pertaining to the Mueller Industries, Inc. 1994 Stock Option Plan and the 1994 Non-Employee Director Stock Option Plan;

of our reports dated February 28, 2012, with respect to the consolidated financial statements and schedule of Mueller Industries, Inc. and the effectiveness of internal control over financial reporting of Mueller Industries, Inc., included in this Annual Report (Form 10-K) for the year ended December 31, 2011.

	/S/ Ernst & Young LLP
Memphis, Tennessee
February 28, 2012

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Gregory L Christopher, certify that:

1.	I have reviewed this annual report on Form 10-K of Mueller Industries, Inc.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)), for the registrant and have:
	a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b)		Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	c)		Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	d)		Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
5.	The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):
	a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and
	b)		Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 28, 2012
	/S/ Gregory L. Christopher
	Gregory L. Christopher
	Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Kent A. McKee, certify that:

1.	I have reviewed this annual report on Form 10-K of Mueller Industries, Inc.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)), for the registrant and have:
	a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b)		Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	c)		Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	d)		Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
5.	The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):
	a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and
	b)		Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 28, 2012
	/S/ Kent A. McKee
	Kent A. McKee
	Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Mueller Industries, Inc. (the "Company") on Form 10-K for the period ending December 31, 2011 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Gregory L. Christopher, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)	The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2)	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
		/S/ Gregory L. Christopher
		Gregory L. Christopher
		Chief Executive Officer
		February 28, 2012

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Mueller Industries, Inc. (the "Company") on Form 10-K for the period ending December 31, 2011 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Kent A. McKee, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)	The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2)	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
		/S/ Kent A. McKee
		Kent A. McKee
		Chief Financial Officer
		February 28, 2012

XML

Inventories (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010
Inventories [Abstract]
Raw materials and supplies	$ 42,281,000	$ 47,737,000
Work-in-process	38,420,000	34,784,000
Finished goods	143,648,000	131,921,000
Valuation reserves	(5,156,000)	(4,550,000)
Inventories	219,193,000	209,892,000
Inventories valued using the LIFO method	15,100,000	21,200,000
FIFO cost of inventories	101,200,000	126,800,000
Average cost basis inventories	44,900,000	36,400,000
Deferred LIFO Gain	8,000,000
FIFO value of inventory consigned to others	$ 2,900,000	$ 2,600,000

XML

Quarterly Financial Information (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2011		Oct. 01, 2011		Jul. 02, 2011		Apr. 02, 2011		Dec. 25, 2010		Sep. 25, 2010		Jun. 26, 2010		Mar. 27, 2010		Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Quarterly Financial Information (Unaudited) [Abstract]
Net sales	$ 491,384		$ 585,809		$ 652,923		$ 687,681		$ 526,901		$ 507,240		$ 540,388		$ 485,268
Gross profit	63,442	[1]	61,825	[1]	79,046	[1]	97,807	[1]	69,380	[1]	69,643	[1]	73,743	[1]	72,220	[1]
Consolidated net income	13,072		10,741		22,731		40,542	[2]	17,952		18,747		16,037		34,799	[3]	87,086	87,535	5,337
Net income attributable to Mueller Industries, Inc.	12,928		10,475		22,331		40,587		17,746		18,909		15,558		33,958		86,321	86,171	4,675
Basic earnings per share (in dollars per share)	$ 0.34		$ 0.28		$ 0.59		$ 1.08		$ 0.47		$ 0.50		$ 0.41		$ 0.90		$ 2.28	$ 2.29	$ 0.13
Diluted earnings per share (in dollars per share)	$ 0.34		$ 0.27		$ 0.59		$ 1.07		$ 0.47		$ 0.50		$ 0.41		$ 0.90		$ 2.26	$ 2.28	$ 0.12
Dividends per share (in dollars per share)	$ 0.10		$ 0.10		$ 0.10		$ 0.10		$ 0.10		$ 0.10		$ 0.10		$ 0.10		$ 0.40	$ 0.40	$ 0.40
After tax Insurance settlement							6,800								23,300		0	22,736	0
Impairment charges, primarily goodwill																	$ 0	$ 0	$ 29,755

[1] Gross profit is net sales less cost of goods sold, which excludes depreciation and amortization.

[2] First quarter of 2011 includes gain from litigation settlement of $6.8 million after tax.

[3] First quarter of 2010 includes gain from insurance settlement of $23.3 million after tax.

XML

Other (Expense) Income, Net (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Other (Expense) Income, Net [Abstract]
Interest income	$ 711	$ 829	$ 1,080
Gain on early retirement of debt	0	0	128
Gain (Loss) on disposal of properties, net	202	(756)	(683)
Environmental expense, non-operating properties	(330)	(3,467)	(644)
Other	1,329	744	991
Other (expense) income, net	$ 1,912	$ (2,650)	$ 872

XML

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 25, 2010		Dec. 26, 2009
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance	$ 5,447		$ 5,947		$ 6,690
Charged to costs and expenses	(229)		4,763		506
Other additions	(2)	[1]	111	[1]	85	[1]
Deductions	3,652		5,374		1,334
Balance	1,564		5,447		5,947
Environmental Reserves [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance	23,902		23,268		23,248
Charged to costs and expenses	392		5,378		1,087
Other additions	0		(6)		5
Deductions	1,402		4,738		1,072
Balance	22,892		23,902		23,268
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance	28,714		33,812		32,624
Charged to costs and expenses	(443)		(5,496)		52
Other additions	1,434	[2]	398		1,136	[2]
Deductions	0		0		0
Balance	$ 29,705		$ 28,714		$ 33,812

[1] Other consists primarily of bad debt recoveries as well as the effect of fluctuating foreign currency exchange rates in all years presented.

[2] Other includes the additions to valuation allowances in which previously unrecorded gross deferred tax assets and valuation allowances were recognized.

XML

Employee Benefits (Details) (USD $)	12 Months Ended
	Dec. 31, 2011		Dec. 25, 2010	Dec. 26, 2009
Change in fair value of plan assets [Roll Forward]
Payable maximum period to be considered current (in months)	12M
Long-term liability	$ (32,839,000)		$ (18,249,000)
Percentage of gains and losses amortized over the average remaining service period (in hundredths)	10.00%
Weighted average assumptions in net periodic benefit calculations [Abstract]
Minimum annual assumed rate of increase in the per capita cost of covered benefits (in hundredths)	6.55%
Maximum annual assumed rate of increase in the per capita cost of covered benefits (in hundredths)	10.00%
Ultimate health care cost trend rate (in hundredths)	5.00%
Target allocation percentage [Abstract]
Company's target allocation minimum of equity securities (in hundredths)	60.00%
Company's target allocation maximum on fixed income securities (in hundredths)	25.00%
Company's target allocation maximum of alternative investments (in hundredths)	20.00%
One percent change assumptions [Abstract]
Increase in the accumulated postretirement benefit obligation	1,900,000
Increase in the service and interest cost components of net periodic postretirement benefit costs	100,000
Decrease in the accumulated postretirement benefit obligation	1,600,000
Decrease in the service and interest cost components of net periodic postretirement benefit costs	100,000
Defined Benefit Plan Disclosure [Line Items]
Plan assets	147,502,000
Approximate percentage of common stock invested in major industry (in hundredths)	88.00%
Approximate percentage of mutual funds actively managed (in hundredths)	30.00%
Percentage of mutual funds' assets that are invested in U.S equities (in hundredths)	32.00%
Approximate percentage of indexed mutual funds	70.00%
Percent of mutual funds' assets that are invested in non-U.S. equities (in hundredths)	57.00%
Percent of mutual funds' assets that are invested in non-U.S. fixed income securities (in hundredths)	11.00%
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Number of funds that can be redeemed quarterly	1
Number of days notice needed to redeem quarterly funding from investments in limited partnerships (in days)	60D
Number of days notice needed to redeem monthly funding from investments in limited partnerships (in days)	30D
I.A.M Plan Trusts [Abstract]
Number of collective bargaining agreements	2
Percentage of employer contributions (in hundredths)	5.00%
Pension expense under the I.A.M. pension plan trusts	900,000		700,000	1,400,000
Maximum percentage funded in the red zone, under the Pension Protection act of 2006 (in hundredths)	65.00%
Maximum percentage funded in the yellow zone, under the Pension Protection act of 2006 (in hundredths)	80.00%
Maximum percentage funded in the green zone, under the Pension Protection act of 2006 (in hundredths)	80.00%
Compensation expense for the Company's matching contribution	3,000,000		2,500,000	2,400,000
Contributions to UMWA 1992 Benefit Plan	338,000		478,000	475,000
Limited partnerships [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	11,590,000
Purchases	1,068,000
Redemptions	(1,668,000)
Net appreciation in fair value	155,000
Ending balance	11,145,000
Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	89,259,000
Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	47,098,000
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	11,145,000
Cash and money market funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	11,707,000
Cash and money market funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	11,707,000
Cash and money market funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0
Cash and money market funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0
Common stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	58,498,000	[1]
Common stock [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	58,498,000	[1]
Common stock [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	[1]
Common stock [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	[1]
Mutual funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	66,152,000	[2]
Mutual funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	19,054,000	[2]
Mutual funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	47,098,000	[2]
Mutual funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	[2]
Limited partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	11,145,000
Limited partnerships [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0
Limited partnerships [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0
Limited partnerships [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets	11,145,000
Pension benefits [Member]
Change in benefit obligation [Roll Forward]
Obligation at beginning of year	174,464,000		164,644,000
Service cost	1,394,000		823,000
Interest cost	9,051,000		9,374,000
Actuarial loss (gain)	6,077,000		12,417,000
Benefit payments	(10,942,000)		(10,636,000)
Effect of curtailments and settlements	0		0
Foreign currency translation adjustment	297,000		(2,158,000)
Obligation at end of year	180,341,000		174,464,000	164,644,000
Change in fair value of plan assets [Roll Forward]
Beginning Balance	156,215,000		147,703,000
Actual return on plan assets	(1,306,000)		17,585,000
Employer contributions	3,094,000		3,042,000
Benefit payments	(10,942,000)		(10,636,000)
Foreign currency translation adjustment	441,000		(1,479,000)
Ending Balance	147,502,000		156,215,000	147,703,000
Underfunded status at end of year	(32,839,000)		(18,249,000)
Unrecognized net actuarial loss	58,436,000		41,935,000
Unrecognized prior service cost	3,000		4,000
Current liability	0		0
Long-term liability	(32,839,000)		(18,249,000)
Total underfunded status	(32,839,000)		(18,249,000)
Service cost	1,394,000		823,000	865,000
Interest cost	9,051,000		9,374,000	8,907,000
Expected return on plan assets	(11,569,000)		(11,443,000)	(10,732,000)
Amortization of prior service cost	2,000		294,000	305,000
Amortization of net loss (gain)	2,346,000		2,307,000	833,000
Net periodic benefit cost (income)	1,224,000		1,355,000	178,000
Weighted average assumptions in benefit obligations calculations [Abstract]
Discount rate (in hundredths)	4.80%		5.25%
Expected long-term return on plan assets (in hundredths)	7.11%		7.51%
Rate of compensation increases (in hundredths)
Rate of inflation (in hundredths)	3.00%		3.40%
Weighted average assumptions in net periodic benefit calculations [Abstract]
Discount rate (in hundredths)	5.25%		5.77%	6.44%
Expected long-term return on plan assets (in hundredths)	7.51%		8.04%	8.12%
Rate of compensation increases (in hundredths)	3.40%		3.75%	2.75%
Asset category [Abstract]
Equity securities (includes equity mutual funds) (in hundredths)	80.00%		73.00%
Fixed income securities (includes fixed income mutual funds) (in hundredths)	5.00%		4.00%
Cash and equivalents (includes money market funds) (in hundredths)	8.00%		16.00%
Alternative investments (in hundredths)	7.00%		7.00%
Total (in hundredths)	100.00%		100.00%
Future expected benefit payments [Abstract]
2012	10,311,000
2013	10,384,000
2014	10,513,000
2015	10,657,000
2016	10,783,000
2017-2021	53,809,000
Total	106,457,000
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Company's expected contribution to benefit plans in next fiscal year	1,500,000
Other benefits [Member]
Change in benefit obligation [Roll Forward]
Obligation at beginning of year	21,083,000		21,381,000
Service cost	344,000		275,000
Interest cost	993,000		1,334,000
Actuarial loss (gain)	(1,369,000)		(697,000)
Benefit payments	(937,000)		(1,100,000)
Effect of curtailments and settlements	0		(167,000)
Foreign currency translation adjustment	(169,000)		57,000
Obligation at end of year	19,945,000		21,083,000	21,381,000
Change in fair value of plan assets [Roll Forward]
Beginning Balance	0		0
Actual return on plan assets	0		0
Employer contributions	937,000		1,100,000
Benefit payments	(937,000)		(1,100,000)
Foreign currency translation adjustment	0		0
Ending Balance	0		0	0
Underfunded status at end of year	(19,945,000)		(21,083,000)
Unrecognized net actuarial loss	118,000		1,455,000
Unrecognized prior service cost	17,000		16,000
Current liability	(1,333,000)		(1,362,000)
Long-term liability	(18,612,000)		(19,721,000)
Total underfunded status	(19,945,000)		(21,083,000)
Service cost	344,000		273,000	235,000
Interest cost	993,000		1,333,000	1,824,000
Amortization of prior service cost	(3,000)		1,000	2,000
Amortization of net loss (gain)	(2,000)		156,000	156,000
Effect of curtailments and settlements	0		25,000	28,000
Net periodic benefit cost (income)	1,332,000		1,788,000	2,245,000
Weighted average assumptions in benefit obligations calculations [Abstract]
Discount rate (in hundredths)	4.97%		5.39%
Rate of compensation increases (in hundredths)	5.04%		5.04%
Rate of inflation (in hundredths)
Weighted average assumptions in net periodic benefit calculations [Abstract]
Discount rate (in hundredths)	5.39%		6.08%	6.24%
Expected long-term return on plan assets (in hundredths)
Rate of compensation increases (in hundredths)	5.04%		5.04%	5.04%
Future expected benefit payments [Abstract]
2012	1,333,000
2013	1,350,000
2014	1,370,000
2015	1,433,000
2016	1,386,000
2017-2021	7,328,000
Total	14,200,000
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Company's expected contribution to benefit plans in next fiscal year	1,300,000
U.K Plan [Member]
Change in fair value of plan assets [Roll Forward]
Percent of above benefit obligation on company sponsored UK pension plan (in hundredths)	36.00%		35.00%
Percent above plan assets on company sponsored UK pension plan (in hundredths)	33.00%		32.00%
Defined benefit plan, amortization of net gains (losses)	$ (3,700,000)

[1] Approximately 88 percent of common stock represents investments in U.S. companies primarily in the health care, utilities, financials, consumer staples, industrials, information technology, and telecommunications sectors. All investments in common stock are listed on U.S. stock exchanges.

[2] Approximately 30 percent of mutual funds are actively managed funds. Additionally, 32 percent of the mutual funds' assets are invested in U.S. equities, 57 percent in non-U.S. equities, and 11 percent in non-U.S. fixed income securities.

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Other (Expense) Income, Net (Tables)

12 Months Ended

Dec. 31, 2011

Other (Expense) Income, Net [Abstract]

Other (Expense) Income, Net

(In thousands)	2011			2010			2009
Interest income	$	711		$	829		$	1,080
Gain on early retirement of debt		-			-			128
Gain (loss) on disposal of properties, net		202			(756	)		(683	)
Environmental expense, non-operating properties		(330	)		(3,467	)		(644	)
Other		1,329			744			991
Other income (expense), net	$	1,912		$	(2,650	)	$	872

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2011

Summary of Significant Accounting Policies [Abstract]

Nature of Operations

Nature of Operations

The principal business of Mueller Industries, Inc. is the manufacture and sale of copper tube and fittings; line sets; brass and copper alloy rod, bar, and shapes; aluminum and brass forgings; aluminum and copper impact extrusions; plastic pipe, fittings and valves; steel nipples; refrigeration valves and fittings; fabricated tubular products; and gas valves and assemblies.  The Company also resells imported brass and plastic plumbing valves, malleable iron fittings, faucets, and plumbing specialty products.  The Company markets its products to the HVAC, plumbing, refrigeration, hardware, and other industries.  Mueller's operations are located throughout the United States and in Canada, Mexico, Great Britain, and China.

Principles of Consolidation

Principles of Consolidation

The Consolidated Financial Statements include the accounts of Mueller Industries, Inc. and its majority owned subsidiaries.  All significant intercompany accounts and transactions have been eliminated in consolidation.  The noncontrolling interest represents a separate private ownership of 49.5 percent of Mueller-Xingrong.

Revenue Recognition

Revenue Recognition

Revenue is recognized when title and risk of loss passes to the customer, provided collection is determined to be probable and no significant obligations remain for the Company.  Estimates for future rebates on certain product lines and product returns are recognized in the period which the revenue is recorded.  The cost of shipping product to customers is expensed as incurred as a component of cost of goods sold.

Cash Equivalents

Cash Equivalents

Temporary investments with original maturities of three months or less are considered to be cash equivalents.  These investments are stated at cost.  At December 31, 2011 and December 25, 2010, temporary investments consisted of money market mutual funds, commercial paper, bank repurchase agreements, and U.S. and foreign government securities totaling $322.1 million and $315.9 million, respectively.  Included in other current assets is restricted cash of $13.0 million and $9.2 million at December 31, 2011 and December 25, 2010, respectively.  These amounts represent required deposits into brokerage accounts that facilitate the Company's hedging activities and deposits that secure certain short-term notes issued under Mueller-Xingrong's credit facility.

Allowance for Doubtful Accounts

Allowance for Doubtful Accounts

The Company provides an allowance for receivables that may not be fully collected.  In circumstances where the Company is aware of a customer's inability to meet its financial obligations (e.g., bankruptcy filings or substantial downgrading of credit ratings), it records a reserve for bad debts against amounts due to reduce the net recognized receivable to the amount it believes most likely will be collected.  For all other customers, the Company recognizes reserves for bad debts based on its historical collection experience.  If circumstances change (e.g., greater than expected defaults or an unexpected material change in a major customer's ability to meet its financial obligations), the Company's estimate of the recoverability of amounts due could be changed by a material amount.

Inventories

Inventories

The Company's inventories are valued at the lower-of-cost-or-market.  The material component of its U.S. copper tube and copper fittings inventories is valued on a LIFO basis.  Other manufactured inventories, including the non-material components of U.S. copper tube and copper fittings, are valued on a FIFO basis.  Certain inventories purchased for resale are valued on an average cost basis.  Elements of cost in finished goods inventory in addition to the cost of material include depreciation, amortization, utilities, consumable production supplies, maintenance, production wages, and transportation costs.

The market price of copper cathode and scrap is subject to volatility.  During periods when open market prices decline below net book value, the Company may need to provide an allowance to reduce the carrying value of its inventory.  In addition, certain items in inventory may be considered obsolete and, as such, the Company may establish an allowance to reduce the carrying value of those items to their net realizable value.  Changes in these estimates related to the value of inventory, if any, may result in a materially adverse impact on the Company's reported financial position or results of operations.  The Company recognizes the impact of any changes in estimates, assumptions, and judgments in income in the period in which it is determined.

Property, Plant, and Equipment

Property, Plant, and Equipment

Property, plant, and equipment are stated at cost.  Depreciation of buildings, machinery, and equipment is provided on the straight-line method over the estimated useful lives ranging from 20 to 40 years for buildings and five to 20 years for machinery and equipment.  Leasehold improvements are amortized over the lesser of their useful life or the remaining lease term.  Repairs and maintenance are expensed as incurred.

The Company evaluates the carrying value of property, plant, and equipment whenever a change in circumstances indicates that the carrying value may not be recoverable from the undiscounted future cash flows from operations.  If an impairment exists, the net book values are reduced to fair value.

Goodwill

Goodwill

Goodwill represents cost in excess of fair values assigned to the underlying net assets of acquired businesses.  Goodwill is subject to impairment testing, which is performed by the Company as of the first day of the fourth quarter of each fiscal year, unless circumstances dictate more frequent testing.  For testing purposes, the Company defines reporting units as components of its operating segments; components of a segment having similar economic characteristics are combined.  The annual impairment test is a two-step process.  The first step is the estimation of fair value of reporting units that have goodwill.  If this estimate indicates that impairment potentially exists, the second step (step two) is performed.  Step two, used to measure the amount of goodwill impairment loss, compares the implied fair value of goodwill to the carrying value.  In step two the Company is required to allocate the fair value of each reporting unit, as determined in step one, to the fair value of the reporting unit's assets and liabilities, including unrecognized intangible assets and corporate allocation where applicable, in a hypothetical purchase price allocation as if the reporting unit had been purchased on that date.  If the implied fair value of goodwill is less than the carrying value, an impairment charge is recorded.  As discussed in Note 4, impairment charges were recognized in 2009.  There can be no assurance that additional goodwill impairment will not occur in the future.

Self-Insurance Accruals

Self-Insurance Accruals

The Company is primarily self-insured for workers' compensation claims and benefits paid under certain employee health care programs.  Accruals are primarily based on estimated undiscounted cost of claims, which includes incurred but not reported claims, and are classified as accrued wages and other employee costs.

Environmental Reserves and Environmental Expenses

Environmental Reserves and Environmental Expenses

The Company recognizes an environmental liability when it is probable the liability exists and the amount is reasonably estimable.  The Company estimates the duration and extent of its remediation obligations based upon reports of outside consultants; internal analyses of clean-up costs and ongoing monitoring costs; communications with regulatory agencies; and changes in environmental law.  If the Company were to determine that its estimates of the duration or extent of its environmental obligations were no longer accurate, the Company would adjust its environmental liabilities accordingly in the period that such determination is made.  Estimated future expenditures for environmental remediation are not discounted to their present value.  Accrued environmental liabilities are not reduced by potential insurance reimbursements.

Environmental expenses that relate to ongoing operations are included as a component of cost of goods sold.  Environmental expenses related to non-operating properties are included in other income (expense), net on the Consolidated Statements of Income.

Earnings Per Share

Earnings Per Share

Basic earnings per share is computed based on the weighted average number of common shares outstanding.  Diluted earnings per share reflects the increase in weighted average common shares outstanding that would result from the assumed exercise of outstanding stock options and vesting of restricted stock awards calculated using the treasury stock method.  Approximately 1.3 million and 1.2 million stock options were excluded from the computation of diluted earnings per share in 2010, and 2009, respectively, as the options' exercise price was higher than the average market price of the Company's stock.

Income Taxes

Income Taxes

Deferred income tax assets and liabilities are recognized when differences arise between the treatment of certain items for financial statement and tax purposes.  Realization of certain components of deferred tax assets is dependent upon the occurrence of future events.  The Company records valuation allowances to reduce its deferred tax assets to the amount it believes is more likely than not to be realized.  These valuation allowances can be impacted by changes in tax laws, changes to statutory tax rates, and future taxable income levels and are based on the Company's judgment, estimates, and assumptions regarding those future events.  In the event the Company were to determine that it would not be able to realize all or a portion of the net deferred tax assets in the future, the Company would increase the valuation allowance through a charge to income tax expense in the period that such determination is made.  Conversely, if the Company were to determine that it would be able to realize its deferred tax assets in the future, in excess of the net carrying amounts, the Company would decrease the recorded valuation allowance through a decrease to income tax expense in the period that such determination is made.

The Company provides for uncertain tax positions and the related interest and penalties, if any, based upon management's assessment of whether a tax benefit is more likely than not to be sustained upon examination by tax authorities.  Tax benefits for uncertain tax positions that are recognized in the financial statements are measured as the largest amount of benefit, determined on a cumulative probability basis, that is more likely than not to be realized upon ultimate settlement.  To the extent the Company prevails in matters for which a liability for an uncertain tax position is established or is required to pay amounts in excess of the liability, the Company's effective tax rate in a given financial statement period may be affected.

These estimates are highly subjective and could be affected by changes in business conditions and other factors.  Changes in any of these factors could have a material impact on future income tax expense.

Taxes Collected from Customers and Remitted to Governmental Authorities

Taxes Collected from Customers and Remitted to Governmental Authorities

Taxes assessed by a governmental authority that are directly imposed on a revenue producing transaction between the Company and its customers, primarily value added taxes in foreign jurisdictions, are accounted for on a net (excluded from revenues and costs) basis.

Stock-Based Compensation

Stock-Based Compensation

The Company has in effect stock incentive plans under which stock-based awards have been granted to certain employees and members of its board of directors.  Stock-based compensation expense is recognized in the Consolidated Statements of Income as a component of selling, general, and administrative expense based on the grant date fair value of the awards.

Concentrations of Credit and Market Risk

Concentrations of Credit and Market Risk

Concentrations of credit risk with respect to accounts receivable are limited due to the large number of customers comprising the Company's customer base, and their dispersion across different geographic areas and different industries, including HVAC, plumbing, refrigeration, hardware, automotive, OEMs, and others.

The Company minimizes its exposure to base metal price fluctuations through various strategies.  Generally, it prices an equivalent amount of copper raw material, under flexible pricing arrangements it maintains with its suppliers, at the time it determines the selling price of finished products to its customers.

Derivative Instruments and Hedging Activities

Derivative Instruments and Hedging Activities

The Company has utilized futures contracts to manage the volatility related to purchases of copper and natural gas, and certain transactions denominated in foreign currencies.  In addition, the Company has, in the past, reduced its exposure to increases in interest rates by entering into an interest rate swap contract.  These contracts have been designated as cash flow hedges.  The Company has also utilized futures contracts to protect the value of its copper inventory on hand and firm commitments to purchase copper through fair value hedges.  The Company accounts for financial derivative instruments by applying hedge accounting rules.  These rules require the Company to recognize all derivatives, as defined, as either assets or liabilities measured at fair value.  If the derivative is designated as a hedge, depending on the nature of the hedge, changes in the fair value of the derivative will either be offset against the change in fair value of the hedged assets, liabilities, or firm commitments through earnings or recognized as a component of OCI until the hedged item is recognized in earnings.  The ineffective portion of a derivative's change in fair value will be immediately recognized in earnings.  Gains and losses recognized by the Company related to the ineffective portion of its hedging instruments, as well as gains and losses related to the portion of the hedging instruments excluded from the assessment of hedge effectiveness, were not material to the Company's Consolidated Financial Statements.  Should these contracts no longer meet hedge criteria either through lack of effectiveness or because the hedged transaction is not probable of occurring, all deferred gains and losses related to the hedge will be immediately reclassified from OCI into earnings.  Depending on position, the unrealized gain or loss on futures contracts are classified as other current assets or other current liabilities in the Consolidated Balance Sheets, and any changes thereto are recorded in changes in assets and liabilities in the Consolidated Statements of Cash Flows.

The Company primarily executes derivative contracts with major financial institutions.  These counterparties expose the Company to credit risk in the event of non-performance.  The amount of such exposure is limited to the fair value of the contract plus the unpaid portion of amounts due to the Company pursuant to terms of the derivative instruments, if any.  If a downgrade in the credit rating of these counterparties occurs, management believes that this exposure is mitigated by provisions in the derivative arrangements which allow for the legal right of offset of any amounts due to the Company from the counterparties with any amounts payable to the counterparties by the Company.  As a result, management considers the risk of loss from counterparty default to be minimal.

Fair Value of Financial Instruments

Fair Value of Financial Instruments

The carrying amounts for cash and cash equivalents, accounts receivable, and accounts payable approximate fair value due to the short-term maturity of these instruments.  Primarily using market yields, the fair value of the Company's debt instruments were estimated to be $197.0 million and $189.9 million at December 31, 2011 and December 25, 2010, respectively.  Fair value estimates are made at a specific point in time based on relevant market information about the financial instrument (Level 2 hierarchy as defined by ASC 820, Fair Value Measurements and Disclosures (ASC 820)).

Foreign Currency Translation

Foreign Currency Translation

For foreign subsidiaries in which the functional currency is other than the U.S. dollar, balance sheet accounts are translated at exchange rates in effect at the end of the year and income statement accounts are translated at average exchange rates for the year.  Translation gains and losses are included in equity as a component of OCI.  Included in the Consolidated Statements of Income were transaction losses of $0.7 million in 2011, $2.2 million in 2010, and $0.2 million in 2009.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates, assumptions, and judgments that affect the amounts reported in the financial statements and accompanying notes.  Actual results could differ from those estimates.

Recently Issued Accounting Standards

Recently Issued Accounting Standards

In June 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) No. 2011-05, Presentation of Comprehensive Income. (ASU 2011-05)  ASU 2011-05 eliminates the option to report other comprehensive income and its components in the consolidated statement of shareholder's equity and comprehensive income and requires an entity to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement or in two separate but consecutive statements.  This pronouncement is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011.  The adoption of ASU 2011-05 concerns presentation and disclosure only and will not have an impact on the Company's consolidated financial position, results of operations, or cash flows.

In May 2011, the FASB issued ASU No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and International Financial Reporting Standards (IFRS) (ASU 2011-04).  This pronouncement was issued to provide a consistent definition of fair value and ensure that the fair value measurement and disclosure requirements are similar between U.S. GAAP and IFRS.  ASU 2011-04 changes certain fair value measurement principles and enhances the disclosure requirements particularly for Level 3 fair value measurements.  This pronouncement is effective for reporting periods beginning on or after December 15, 2011.  The adoption of ASU 2011-04 is not expected to have a significant impact on the Company's consolidated financial position, results of operations, or cash flows.

XML

Derivative Instruments and Hedging Activities (Details) (Commodity contracts [Member], Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Other current assets: gain positions	$ 85	$ 891
Other current assets: loss positions	(25)
Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Other current liability: gain positions	339
Other current liability: loss positions	$ (1,078)

XML

Debt (Details)	12 Months Ended						12 Months Ended				12 Months Ended
	Dec. 31, 2011 USD ($)	Dec. 25, 2010 USD ($)	Dec. 26, 2009 USD ($)	Dec. 31, 2011 Mueller Xingrong Line of Credit [Member] USD ($)	Dec. 31, 2011 Mueller Xingrong Line of Credit [Member] CNY	Dec. 25, 2010 Mueller Xingrong Line of Credit [Member] USD ($)	Dec. 31, 2011 Credit Agreement [Member] USD ($)	Dec. 31, 2011 6% Subordinated Debentures [Member] USD ($)	Dec. 26, 2009 6% Subordinated Debentures [Member] USD ($)	Dec. 25, 2010 6% Subordinated Debentures [Member] USD ($)	Dec. 31, 2011 2001 Series IRB [Member] USD ($)	Dec. 25, 2010 2001 Series IRB [Member] USD ($)	Dec. 31, 2011 Other [Member] USD ($)	Dec. 25, 2010 Other [Member] USD ($)
Debt Instrument [Line Items]
Debt	$ 197,741,000	$ 190,246,000						$ 148,176,000		$ 148,176,000	$ 9,250,000	$ 10,000,000	$ 50,000	$ 50,000
Debt, stated interest rate (in hundredths)				6.89%	6.89%			6.00%		6.00%	1.23%
Debt instrument maturity date								Nov. 01, 2014			Dec. 31, 2021
Debt instrument, Face amount								299,500,000
Repurchase and extinguishment of debt								151,300,000
Extinguishment of debt									500,000
Debentures redemption price per principal amount (in hundredths)								100.00%
Line of Credit Facility [Line Items]
Line of credit outstanding				40,265,000		32,020,000
Less current portion of debt	(41,265,000)	(32,020,000)
Long-term debt	156,476,000	158,226,000
Maturity date of credit facility				2012-07-28	2012-07-28		2016-03-07
Line of credit facility maximum borrowing capacity				50,000,000	350,000,000		350,000,000
Debt instrument variable rate basis							Borrowings under the Credit Facility bear interest, at the Company's option, at LIBOR or Base Rate as defined by the Credit Agreement, plus a variable premium. LIBOR advances may be based upon the one, two, three, or six-month LIBOR.
Basis spread on variable rate, LIBOR, minimum (in hundredths)							1.50%
Basis spread on variable rate, LIBOR, maximum (in hundredths)							2.00%
Basis spread on variable rate, LIBOR, (in hundredths)							1.75%
Basis spread on variable rate, Base Rate loans, minimum (in hundredths)							0.50%
Basis spread on variable rate, Base Rate loans, maximum (in hundredths)							1.00%
Basis spread on variable rate, Base Rate loans (in hundredths)							0.75%
Credit facility commitment fee, minimum (in hundredths)							0.25%
Credit facility commitment fee, maximum (in hundredths)							0.375%
Outstanding letters of credit							11,300,000
Terms of the letters of credit (in years)							1Y
Number of banks in the credit agreement syndicate				4	4
Initial line of credit facility maximum borrowing capacity					330,000,000
Initial maturity date of previous credit agreement				Jul. 16, 2011	Jul. 16, 2011
Aggregate annual maturities of debt [Abstract]
2012	41,300,000
2013	1,000,000
2014	149,200,000
2015	1,000,000
2016	1,000,000
Thereafter	4,200,000
Interest paid	$ 10,800,000	$ 11,400,000	$ 10,100,000

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Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2011

Quarterly Financial Information (Unaudited) [Abstract]

Quarterly Financial Information (Unaudited)

	First			Second		Third		Fourth
(In thousands, except per share data)	Quarter			Quarter		Quarter		Quarter
2011
Net sales	$	687,681		$	652,923	$	585,809	$	491,384
Gross profit (1)		97,807			79,046		61,825		63,442
Consolidated net income		40,542	(2)		22,731		10,741		13,072
Net income attributable to Mueller Industries, Inc.		40,587			22,331		10,475		12,928
Basic earnings per share		1.08			0.59		0.28		0.34
Diluted earnings per share		1.07			0.59		0.27		0.34
Dividends per share		0.10			0.10		0.10		0.10
2010
Net sales	$	485,268		$	540,388	$	507,240	$	526,901
Gross profit (1)		72,220			73,743		69,643		69,380
Consolidated net income		34,799	(3)		16,037		18,747		17,952
Net income attributable to Mueller Industries, Inc.		33,958			15,558		18,909		17,746
Basic earnings per share		0.90			0.41		0.50		0.47
Diluted earnings per share		0.90			0.41		0.50		0.47
Dividends per share		0.10			0.10		0.10		0.10

 (1) Gross profit is net sales less cost of goods sold, which excludes depreciation and amortization.

 (2) First quarter of 2011 includes gain from litigation settlement of $6.8 million after tax.

 (3) First quarter of 2010 includes gain from insurance settlement of $23.3 million after tax.

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Acquisitions (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 25, 2010	Dec. 31, 2011
Tube Forming, L.P. [Member]
Business Acquisition [Line Items]
Estimated net sales	$ 35
Approximate amount paid for certain assets		6.9
Linesets, Inc. [Member]
Business Acquisition [Line Items]
Approximate amount paid for certain assets		$ 2.1

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Commitments and Contingencies (Details) (USD $)	12 Months Ended							12 Months Ended			12 Months Ended				12 Months Ended		12 Months Ended				12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009	Dec. 31, 2011 Facilities vehicles and equipment [Member]	Dec. 25, 2010 Facilities vehicles and equipment [Member]	Dec. 26, 2009 Facilities vehicles and equipment [Member]	Dec. 31, 2011 United States Department of Commerce and United States International Trade Commission Antidumping Investigation [Member]	Dec. 25, 2010 United States Department of Commerce and United States International Trade Commission Antidumping Investigation [Member] Department of Commerce [Member]	Dec. 25, 2010 United States Department of Commerce and United States International Trade Commission Antidumping Investigation [Member] International Trade Commission [Member]	Dec. 31, 2011 Insurance Settlement [Member] Bilston, Great Britain [Member]	Dec. 31, 2011 Insurance Settlement [Member] Fulton, Mississippi [Member]	Dec. 31, 2011 Insurance Settlement [Member] Wynne, Arkansas [Member]	Dec. 31, 2011 United States Department of Commerce Antidumping Review [Member]	Dec. 27, 2008 United States Department of Commerce Antidumping Review [Member]	Dec. 31, 2011 Canadian Dumping and Countervail Investigation [Member]	Dec. 31, 2011 Supplier Litigation [Member]	Dec. 31, 2011 Operating Properties [Member] Mueller Copper Tube Products, Inc [Member]	Dec. 25, 2010 Operating Properties [Member] Belding Michigan Lead Matters [Member]	Dec. 31, 2011 Non-operating Properties [Member] Southeast Kansas Sites [Member]	Dec. 27, 2008 Non-operating Properties [Member] Southeast Kansas Sites [Member]	Dec. 31, 2011 Non-operating Properties [Member] Eureka Mills Site [Member]	Dec. 31, 2011 Non-operating Properties [Member] Shasta Area Mine Sites [Member]	Dec. 25, 2010 Non-operating Properties [Member] Shasta Area Mine Sites [Member]	Dec. 26, 2009 Non-operating Properties [Member] Shasta Area Mine Sites [Member]	Dec. 31, 2011 Non-operating Properties [Member] Lead Refinery Site [Member]	Dec. 25, 2010 Non-operating Properties [Member] Lead Refinery Site [Member]	Dec. 26, 2009 Non-operating Properties [Member] Lead Refinery Site [Member]
Site Contingency [Line Items]
Environmental expense	$ 400,000	$ 5,400,000	$ 1,100,000																			$ 600,000	$ 700,000	$ 500,000	$ 100,000	$ 100,000	$ 100,000
Environmental reserves	22,892,000	23,902,000																400,000		9,500,000
Expected environmental expenditures for 2012	1,300,000
Expected environmental expenditures for 2013	1,100,000
Expected environmental expenditures for 2014	1,000,000
Expected environmental expenditures for 2015	500,000
Expected environmental expenditures for 2016	500,000
Expected environmental expenditures after 2016	9,000,000
Number of former smelters																			2
Number of parties involved in settlement negotiations																			1
Number of smelting sites the company will share the preliminary site assessment costs																			1
Number of potentially responsible parties sharing site assessment cost																			2
Annual amount spent																					2,500,000
Settlement claims paid to the State of Utah																					250,000
Mitigation estimates minimum																	900,000					8,200,000			2,100,000
Mitigation estimates maximum																						11,500,000			3,300,000
Estimated number of years until mitigation resolution																	10Y					20Y			20Y
Civil fine paid																		176,000
Loss Contingencies [Line Items]
Period of measures under antidumping investigation (in years)															5Y
Insurance settlement proceeds										35,300,000
Number of subsidiaries jointly filed antidumping petitions							2
Assignment of antidumping duty rate on U.S. imports by Company subsidiaries (in hundredths)													19.80%	48.33%
Reserve for Antidumping Duties for Report Issued on April 19, 2010													1,000,000	4,200,000
Number of subsidiaries that filed related to supplier litigation																2
Number of Xiamen Lota employees that filed a patent lawsuit																2
Number of US patents alleged by the plaintiff																3
Gain Contingencies [Line Items]
Final antidumping rates minimum (in hundredths)								24.89%	11.25%
Final antidumping rates maximum (in hundredths)								27.16%	60.85%
Insurance claim deductible amount										500,000
Pre-tax gain from settlement										21,200,000	1,500,000
Period of production curtailment for cleanup and repairs (in weeks)											1W
Book value of inventories prior to potential scrap recoveries												2,700,000
Net book value of certain production equipment and building structures that were damaged												9,600,000
Receivable for clean-up and other out of pocket costs incurred												2,500,000
Advance from insurance company												10,000,000
Net claim receivable											1,500,000	4,800,000
Subsequent advance from insurance company												40,000,000
Property damage claim											1,500,000	4,800,000
Maximum amount payable under the Consulting agreement	6,700,000
Litigation Settlement [Abstract]
Litigation settlement	10,500,000
Operating Leased Assets [Line Items]
Lease payments scheduled for 2012				7,800,000
Lease payments scheduled for 2013				6,700,000
Lease payments scheduled for 2014				5,000,000
Lease payments scheduled for 2015				4,500,000
Lease payments scheduled for 2016				3,800,000
Lease payments scheduled after 2016				6,400,000
Lease expense				$ 8,800,000	$ 8,000,000	$ 8,600,000
Long-term Purchase Commitment [Line Items]
Consulting agreement term (in years)	6Y
Initial period of the consulting agreement (in years)	4Y
Initial period rate of pay based on final base compensation (in hundredths)	two-thirds
Final period of the consulting agreement (in years)	2Y
Final period rate of pay of based on final base compensation (in hundredths)	one-third

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Inventories

12 Months Ended

Dec. 31, 2011

Inventories [Abstract]

Inventories

Note 2 – Inventories

(In thousands)	2011			2010
Raw materials and supplies	$	42,281		$	47,737
Work-in-process		38,420			34,784
Finished goods		143,648			131,921
Valuation reserves		(5,156	)		(4,550	)
Inventories	$	219,193		$	209,892

Inventories valued using the LIFO method totaled $15.1 million at December 31, 2011 and $21.2 million at December 25, 2010.  At December 31, 2011 and December 25, 2010, the approximate FIFO cost of such inventories was $101.2 million and $126.8 million, respectively.  Additionally, the Company valued certain inventories purchased for resale on an average cost basis.  The values of those inventories were $44.9 million at December 31, 2011 and $36.4 million at December 25, 2010.

During 2011, inventory quantities valued using the LIFO method declined which resulted in liquidation of LIFO inventory layers.  This liquidation resulted from intercompany sales; therefore the gain from the LIFO liquidation of approximately $8.0 million was deferred.  The deferred gain will decrease cost of sales in the future period that the inventory is sold to third parties.

At December 31, 2011, the FIFO value of inventory consigned to others was $2.9 million compared with $2.6 million at the end of 2010.

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Equity (Details) (USD $) In Thousands, except Share data in Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010
Equity [Abstract]
Cumulative foreign currency translation adjustment	$ (10,396)	$ (9,480)
Unrecognized prior service cost, net of income tax	(13)	(13)
Unrecognized actuarial net loss, net of income tax	(38,667)	(28,289)
Unrecognized derivative gains, net of income tax	(422)	566
Unrealized gain on marketable securities, net of income tax	89	170
Accumulated other comprehensive loss	$ (49,409)	$ (37,046)
Authorization to repurchase shares of common stock (in shares)	10
Shares repurchased (in shares)	2.4
Decrease in Mexican peso value relative to US dollar (in hundredths)	11.40%

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Debt (Tables)

12 Months Ended

Dec. 31, 2011

Debt [Abstract]

Debt

(In thousands)	2011			2010
6% Subordinated Debentures, due 2014	$	148,176		$	148,176
2001 Series IRB's with interest at 1.23%, due through 2021		9,250			10,000
Mueller-Xingrong line of credit with interest at 6.89%, due 2012		40,265			32,020
Other		50			50
		197,741			190,246
Less current portion of debt		(41,265	)		(32,020	)
Long-term debt	$	156,476		$	158,226

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Goodwill (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill [Abstract]

Schedule of the carrying amount of goodwill

The changes in the carrying amount of goodwill were as follows:

(In thousands)		Plumbing & Refrigeration Segment			OEM Segment			Total
Balance at December 31, 2011, December 25, 2010, and December 26, 2009:
	Goodwill	$	141,684		$	9,971		$	151,655
	Accumulated impairment		(39,434	)		(9,971	)		(49,405	)
Goodwill, net		$	102,250		$	-		$	102,250

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Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Income Taxes [Abstract]
Domestic	$ 118,208,000	$ 88,262,000	$ 36,478,000
Foreign	11,953,000	33,588,000	(13,349,000)
Income before income taxes	130,161,000	121,850,000	23,129,000
Current tax expense (benefit) [Abstract]
Federal	43,127,000	32,132,000	14,834,000
Foreign	1,740,000	6,292,000	3,248,000
State and local	2,398,000	2,518,000	2,264,000
Current tax expense	47,265,000	40,942,000	20,346,000
Deferred tax (benefit) expense [Abstract]
Federal	(6,480,000)	(4,057,000)	(4,321,000)
Foreign	344,000	(2,036,000)	3,893,000
State and local	1,946,000	(534,000)	(2,126,000)
Deferred tax (benefit) expense	(4,190,000)	(6,627,000)	(2,554,000)
Income tax expense	43,075,000	34,315,000	17,792,000
Income Tax Reconciliation [Abstract]
Expected income tax expense	45,556,000	42,647,000	8,095,000
State and local income tax, net of federal benefit	4,267,000	2,867,000	2,844,000
Effect of foreign statutory rate different from U.S. and other foreign adjustments	(560,000)	(2,143,000)	435,000
Valuation allowance changes	(443,000)	(5,496,000)	52,000
U.S. production activities deduction	(3,850,000)	(2,975,000)	(700,000)
Gain on early retirement of debt	0	0	(45,000)
Goodwill impairment	0	0	8,728,000
Tax contingency changes	(1,934,000)	(1,516,000)	(973,000)
Other, net	39,000	931,000	(644,000)
Income tax expense	43,075,000	34,315,000	17,792,000
Additional valuation allowance releases, State tax attributes	400,000
Additional valuation allowance per diluted share, State tax attributes (in dollars per share)	$ 0.01
Deferred tax asset valuation allowance released		5,500,000
Valuation allowance per diluted share (in dollars per share)		$ 0.15	$ 0.02
Additional valuation allowance releases		1,100,000	2,600,000
Additional valuation allowance releases per diluted share (in dollars per share)		$ 0.03	$ 0.07
Valuation allowance added to offset foreign deferred tax asset		(1,100,000)	(3,600,000)
Valuation allowance to offset foreign deferred tax asset per diluted share (in dollars per share)		$ (0.03)	$ (0.10)
Valuation allowance related to federal deferred tax asset			900,000
Deferred tax asset associated with tax uncertainties	200,000
Unrecognized Tax Benefits Reconciliation [Roll Forward]
Beginning balance	8,565,000	11,282,000
Increases related to prior year tax positions	0	134,000
Increases related to current year tax positions	0	47,000
Decreases related to prior year tax positions	(802,000)	(612,000)
Decreases related to settlements with taxing authorities	0	(392,000)
Decreases due to lapses in the statute of limitations	(1,191,000)	(1,894,000)
Ending balance	6,572,000	8,565,000	11,282,000
Unrecognized tax benefits, accrued interest	200,000
Unrecognized tax benefits that would impact effective tax rate	4,000,000
Unrecognized tax benefits decreases resulting from current period tax positions	3,600,000
Cumulative potential interest and penalties accrued related to unrecognized tax benefits	200,000	700,000
Credit to income tax expense related to penalties and interest	500,000	200,000	700,000
Audit settlements tax expense		2,000,000
Audit settlements tax expense per diluted share (in dollars per share)		$ 0.05
Deferred tax assets [Abstract]
Accounts receivable	424,000	1,961,000
Inventories	11,075,000	7,885,000
Other postretirement benefits and accrued items	13,880,000	13,889,000
Pension	19,262,000	14,764,000
Other reserves	14,671,000	13,516,000
Federal and foreign tax attributes	7,421,000	6,651,000
State tax attributes, net of federal benefit	30,478,000	32,138,000
Other	2,296,000	2,062,000
Total deferred tax assets	99,507,000	92,866,000
Less valuation allowance	(29,705,000)	(28,714,000)
Deferred tax assets, net of valuation allowance	69,802,000	64,152,000
Deferred tax liabilities [Abstract]
Property, plant, and equipment	44,757,000	48,330,000
Foreign withholding tax	0	719,000
Pension	8,589,000	8,621,000
Other	893,000	1,093,000
Total deferred tax liabilities	54,239,000	58,763,000
Net deferred tax asset (liability)	15,563,000	5,389,000
State income tax credit carryforwards	600,000
Other state income tax credit carryforwards	15,400,000
State net operating loss carryforwards with potential tax benefits	14,400,000
State tax credit and NOL carryforwards offset by valuation allowances	22,800,000
Federal and foreign tax attributes with potential tax benefits	7,400,000
Federal and foreign tax attributes with potential tax benefits with unlimited life	2,200,000
Federal and foreign tax attributes with potential tax benefits with expiration	5,200,000
Valuation allowances	6,900,000
Income taxes paid	$ 45,900,000	$ 46,000,000	$ 20,000,000

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Equity (Tables)

12 Months Ended

Dec. 31, 2011

Equity [Abstract]

Components of accumulated other comprehensive loss

Components of accumulated other comprehensive loss are as follows:

(In thousands)	2011			2010
Cumulative foreign currency translation adjustment	$	(10,396	)	$	(9,480	)
Unrecognized prior service cost, net of income tax		(13	)		(13	)
Unrecognized actuarial net loss, net of income tax		(38,667	)		(28,289	)
Unrecognized derivative gains, net of income tax		(422	)		566
Unrealized gain on marketable securities, net of income tax		89			170
Accumulated other comprehensive loss	$	(49,409	)	$	(37,046	)

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Components of Income (Loss) Before Income Taxes

The components of income (loss) before income taxes were taxed under the following jurisdictions:

(In thousands)	2011		2010		2009
Domestic	$	118,208	$	88,262	$	36,478
Foreign		11,953		33,588		(13,349	)
Income before income taxes	$	130,161	$	121,850	$	23,129

Components of Income Tax Expense

Income tax expense consists of the following:

(In thousands)	2011			2010			2009
Current tax expense:
Federal	$	43,127		$	32,132		$	14,834
Foreign		1,740			6,292			3,248
State and local		2,398			2,518			2,264
Current tax expense		47,265			40,942			20,346
Deferred tax (benefit) expense:
Federal		(6,480	)		(4,057	)		(4,321	)
Foreign		344			(2,036	)		3,893
State and local		1,946			(534	)		(2,126	)
Deferred tax (benefit) expense		(4,190	)		(6,627	)		(2,554	)
Income tax expense	$	43,075		$	34,315		$	17,792

Income Tax Reconciliation

The difference between the reported income tax expense and a tax determined by applying the applicable U.S. federal statutory income tax rate to income before income taxes is reconciled as follows:

(In thousands)	2011			2010			2009
Expected income tax expense	$	45,556		$	42,647		$	8,095
State and local income tax, net of federal benefit		4,267			2,867			2,844
Effect of foreign statutory rate different from U.S. and other foreign adjustments		(560	)		(2,143	)		435
Valuation allowance changes		(443	)		(5,496	)		52
U.S. production activities deduction		(3,850	)		(2,975	)		(700	)
Gain on early retirement of debt		-			-			(45	)
Goodwill impairment		-			-			8,728
Tax contingency changes		(1,934	)		(1,516	)		(973	)
Other, net		39			931			(644	)
Income tax expense	$	43,075		$	34,315		$	17,792

Unrecognized Tax Benefits Reconciliation

The following summarizes the activity related to the Company's unrecognized tax benefits:

(In thousands)	2011			2010
Beginning balance	$	8,565		$	11,282
Increases related to prior year tax positions		-			134
Increases related to current year tax positions		-			47
Decreases related to prior year tax positions		(802	)		(612	)
Decreases related to settlements with taxing authorities		-			(392	)
Decreases due to lapses in the statute of limitations		(1,191	)		(1,894	)
Ending balance	$	6,572		$	8,565

Components of Deferred Tax Assets and Liabilities

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are presented below:

(In thousands)	2011			2010
Deferred tax assets:
Accounts receivable	$	424		$	1,961
Inventories		11,075			7,885
Other postretirement benefits and accrued items		13,880			13,889
Pension		19,262			14,764
Other reserves		14,671			13,516
Federal and foreign tax attributes		7,421			6,651
State tax attributes, net of federal benefit		30,478			32,138
Other		2,296			2,062
Total deferred tax assets		99,507			92,866
Less valuation allowance		(29,705	)		(28,714	)
Deferred tax assets, net of valuation allowance		69,802			64,152
Deferred tax liabilities:
Property, plant, and equipment		44,757			48,330
Foreign withholding tax		-			719
Pension		8,589			8,621
Other		893			1,093
Total deferred tax liabilities		54,239			58,763
Net deferred tax asset	$	15,563		$	5,389

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Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2011

Summary of Significant Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Note 1 – Summary of Significant Accounting Policies

Nature of Operations

The principal business of Mueller Industries, Inc. is the manufacture and sale of copper tube and fittings; line sets; brass and copper alloy rod, bar, and shapes; aluminum and brass forgings; aluminum and copper impact extrusions; plastic pipe, fittings and valves; steel nipples; refrigeration valves and fittings; fabricated tubular products; and gas valves and assemblies.  The Company also resells imported brass and plastic plumbing valves, malleable iron fittings, faucets, and plumbing specialty products.  The Company markets its products to the HVAC, plumbing, refrigeration, hardware, and other industries.  Mueller's operations are located throughout the United States and in Canada, Mexico, Great Britain, and China.

Principles of Consolidation

The Consolidated Financial Statements include the accounts of Mueller Industries, Inc. and its majority owned subsidiaries.  All significant intercompany accounts and transactions have been eliminated in consolidation.  The noncontrolling interest represents a separate private ownership of 49.5 percent of Mueller-Xingrong.

Revenue Recognition

Revenue is recognized when title and risk of loss passes to the customer, provided collection is determined to be probable and no significant obligations remain for the Company.  Estimates for future rebates on certain product lines and product returns are recognized in the period which the revenue is recorded.  The cost of shipping product to customers is expensed as incurred as a component of cost of goods sold.

Cash Equivalents

Temporary investments with original maturities of three months or less are considered to be cash equivalents.  These investments are stated at cost.  At December 31, 2011 and December 25, 2010, temporary investments consisted of money market mutual funds, commercial paper, bank repurchase agreements, and U.S. and foreign government securities totaling $322.1 million and $315.9 million, respectively.  Included in other current assets is restricted cash of $13.0 million and $9.2 million at December 31, 2011 and December 25, 2010, respectively.  These amounts represent required deposits into brokerage accounts that facilitate the Company's hedging activities and deposits that secure certain short-term notes issued under Mueller-Xingrong's credit facility.

Allowance for Doubtful Accounts

The Company provides an allowance for receivables that may not be fully collected.  In circumstances where the Company is aware of a customer's inability to meet its financial obligations (e.g., bankruptcy filings or substantial downgrading of credit ratings), it records a reserve for bad debts against amounts due to reduce the net recognized receivable to the amount it believes most likely will be collected.  For all other customers, the Company recognizes reserves for bad debts based on its historical collection experience.  If circumstances change (e.g., greater than expected defaults or an unexpected material change in a major customer's ability to meet its financial obligations), the Company's estimate of the recoverability of amounts due could be changed by a material amount.

Inventories

The Company's inventories are valued at the lower-of-cost-or-market.  The material component of its U.S. copper tube and copper fittings inventories is valued on a LIFO basis.  Other manufactured inventories, including the non-material components of U.S. copper tube and copper fittings, are valued on a FIFO basis.  Certain inventories purchased for resale are valued on an average cost basis.  Elements of cost in finished goods inventory in addition to the cost of material include depreciation, amortization, utilities, consumable production supplies, maintenance, production wages, and transportation costs.

The market price of copper cathode and scrap is subject to volatility.  During periods when open market prices decline below net book value, the Company may need to provide an allowance to reduce the carrying value of its inventory.  In addition, certain items in inventory may be considered obsolete and, as such, the Company may establish an allowance to reduce the carrying value of those items to their net realizable value.  Changes in these estimates related to the value of inventory, if any, may result in a materially adverse impact on the Company's reported financial position or results of operations.  The Company recognizes the impact of any changes in estimates, assumptions, and judgments in income in the period in which it is determined.

Property, Plant, and Equipment

Property, plant, and equipment are stated at cost.  Depreciation of buildings, machinery, and equipment is provided on the straight-line method over the estimated useful lives ranging from 20 to 40 years for buildings and five to 20 years for machinery and equipment.  Leasehold improvements are amortized over the lesser of their useful life or the remaining lease term.  Repairs and maintenance are expensed as incurred.

The Company evaluates the carrying value of property, plant, and equipment whenever a change in circumstances indicates that the carrying value may not be recoverable from the undiscounted future cash flows from operations.  If an impairment exists, the net book values are reduced to fair value.

Goodwill

Goodwill represents cost in excess of fair values assigned to the underlying net assets of acquired businesses.  Goodwill is subject to impairment testing, which is performed by the Company as of the first day of the fourth quarter of each fiscal year, unless circumstances dictate more frequent testing.  For testing purposes, the Company defines reporting units as components of its operating segments; components of a segment having similar economic characteristics are combined.  The annual impairment test is a two-step process.  The first step is the estimation of fair value of reporting units that have goodwill.  If this estimate indicates that impairment potentially exists, the second step (step two) is performed.  Step two, used to measure the amount of goodwill impairment loss, compares the implied fair value of goodwill to the carrying value.  In step two the Company is required to allocate the fair value of each reporting unit, as determined in step one, to the fair value of the reporting unit's assets and liabilities, including unrecognized intangible assets and corporate allocation where applicable, in a hypothetical purchase price allocation as if the reporting unit had been purchased on that date.  If the implied fair value of goodwill is less than the carrying value, an impairment charge is recorded.  As discussed in Note 4, impairment charges were recognized in 2009.  There can be no assurance that additional goodwill impairment will not occur in the future.

Self-Insurance Accruals

The Company is primarily self-insured for workers' compensation claims and benefits paid under certain employee health care programs.  Accruals are primarily based on estimated undiscounted cost of claims, which includes incurred but not reported claims, and are classified as accrued wages and other employee costs.

Environmental Reserves and Environmental Expenses

The Company recognizes an environmental liability when it is probable the liability exists and the amount is reasonably estimable.  The Company estimates the duration and extent of its remediation obligations based upon reports of outside consultants; internal analyses of clean-up costs and ongoing monitoring costs; communications with regulatory agencies; and changes in environmental law.  If the Company were to determine that its estimates of the duration or extent of its environmental obligations were no longer accurate, the Company would adjust its environmental liabilities accordingly in the period that such determination is made.  Estimated future expenditures for environmental remediation are not discounted to their present value.  Accrued environmental liabilities are not reduced by potential insurance reimbursements.

Environmental expenses that relate to ongoing operations are included as a component of cost of goods sold.  Environmental expenses related to non-operating properties are included in other income (expense), net on the Consolidated Statements of Income.

Earnings Per Share

Basic earnings per share is computed based on the weighted average number of common shares outstanding.  Diluted earnings per share reflects the increase in weighted average common shares outstanding that would result from the assumed exercise of outstanding stock options and vesting of restricted stock awards calculated using the treasury stock method.  Approximately 1.3 million and 1.2 million stock options were excluded from the computation of diluted earnings per share in 2010, and 2009, respectively, as the options' exercise price was higher than the average market price of the Company's stock.

Income Taxes

Deferred income tax assets and liabilities are recognized when differences arise between the treatment of certain items for financial statement and tax purposes.  Realization of certain components of deferred tax assets is dependent upon the occurrence of future events.  The Company records valuation allowances to reduce its deferred tax assets to the amount it believes is more likely than not to be realized.  These valuation allowances can be impacted by changes in tax laws, changes to statutory tax rates, and future taxable income levels and are based on the Company's judgment, estimates, and assumptions regarding those future events.  In the event the Company were to determine that it would not be able to realize all or a portion of the net deferred tax assets in the future, the Company would increase the valuation allowance through a charge to income tax expense in the period that such determination is made.  Conversely, if the Company were to determine that it would be able to realize its deferred tax assets in the future, in excess of the net carrying amounts, the Company would decrease the recorded valuation allowance through a decrease to income tax expense in the period that such determination is made.

The Company provides for uncertain tax positions and the related interest and penalties, if any, based upon management's assessment of whether a tax benefit is more likely than not to be sustained upon examination by tax authorities.  Tax benefits for uncertain tax positions that are recognized in the financial statements are measured as the largest amount of benefit, determined on a cumulative probability basis, that is more likely than not to be realized upon ultimate settlement.  To the extent the Company prevails in matters for which a liability for an uncertain tax position is established or is required to pay amounts in excess of the liability, the Company's effective tax rate in a given financial statement period may be affected.

These estimates are highly subjective and could be affected by changes in business conditions and other factors.  Changes in any of these factors could have a material impact on future income tax expense.

Taxes Collected from Customers and Remitted to Governmental Authorities

Taxes assessed by a governmental authority that are directly imposed on a revenue producing transaction between the Company and its customers, primarily value added taxes in foreign jurisdictions, are accounted for on a net (excluded from revenues and costs) basis.

Stock-Based Compensation

The Company has in effect stock incentive plans under which stock-based awards have been granted to certain employees and members of its board of directors.  Stock-based compensation expense is recognized in the Consolidated Statements of Income as a component of selling, general, and administrative expense based on the grant date fair value of the awards.

Concentrations of Credit and Market Risk

Concentrations of credit risk with respect to accounts receivable are limited due to the large number of customers comprising the Company's customer base, and their dispersion across different geographic areas and different industries, including HVAC, plumbing, refrigeration, hardware, automotive, OEMs, and others.

The Company minimizes its exposure to base metal price fluctuations through various strategies.  Generally, it prices an equivalent amount of copper raw material, under flexible pricing arrangements it maintains with its suppliers, at the time it determines the selling price of finished products to its customers.

Derivative Instruments and Hedging Activities

The Company has utilized futures contracts to manage the volatility related to purchases of copper and natural gas, and certain transactions denominated in foreign currencies.  In addition, the Company has, in the past, reduced its exposure to increases in interest rates by entering into an interest rate swap contract.  These contracts have been designated as cash flow hedges.  The Company has also utilized futures contracts to protect the value of its copper inventory on hand and firm commitments to purchase copper through fair value hedges.  The Company accounts for financial derivative instruments by applying hedge accounting rules.  These rules require the Company to recognize all derivatives, as defined, as either assets or liabilities measured at fair value.  If the derivative is designated as a hedge, depending on the nature of the hedge, changes in the fair value of the derivative will either be offset against the change in fair value of the hedged assets, liabilities, or firm commitments through earnings or recognized as a component of OCI until the hedged item is recognized in earnings.  The ineffective portion of a derivative's change in fair value will be immediately recognized in earnings.  Gains and losses recognized by the Company related to the ineffective portion of its hedging instruments, as well as gains and losses related to the portion of the hedging instruments excluded from the assessment of hedge effectiveness, were not material to the Company's Consolidated Financial Statements.  Should these contracts no longer meet hedge criteria either through lack of effectiveness or because the hedged transaction is not probable of occurring, all deferred gains and losses related to the hedge will be immediately reclassified from OCI into earnings.  Depending on position, the unrealized gain or loss on futures contracts are classified as other current assets or other current liabilities in the Consolidated Balance Sheets, and any changes thereto are recorded in changes in assets and liabilities in the Consolidated Statements of Cash Flows.

The Company primarily executes derivative contracts with major financial institutions.  These counterparties expose the Company to credit risk in the event of non-performance.  The amount of such exposure is limited to the fair value of the contract plus the unpaid portion of amounts due to the Company pursuant to terms of the derivative instruments, if any.  If a downgrade in the credit rating of these counterparties occurs, management believes that this exposure is mitigated by provisions in the derivative arrangements which allow for the legal right of offset of any amounts due to the Company from the counterparties with any amounts payable to the counterparties by the Company.  As a result, management considers the risk of loss from counterparty default to be minimal.

Fair Value of Financial Instruments

The carrying amounts for cash and cash equivalents, accounts receivable, and accounts payable approximate fair value due to the short-term maturity of these instruments.  Primarily using market yields, the fair value of the Company's debt instruments were estimated to be $197.0 million and $189.9 million at December 31, 2011 and December 25, 2010, respectively.  Fair value estimates are made at a specific point in time based on relevant market information about the financial instrument (Level 2 hierarchy as defined by ASC 820, Fair Value Measurements and Disclosures (ASC 820)).

Foreign Currency Translation

For foreign subsidiaries in which the functional currency is other than the U.S. dollar, balance sheet accounts are translated at exchange rates in effect at the end of the year and income statement accounts are translated at average exchange rates for the year.  Translation gains and losses are included in equity as a component of OCI.  Included in the Consolidated Statements of Income were transaction losses of $0.7 million in 2011, $2.2 million in 2010, and $0.2 million in 2009.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates, assumptions, and judgments that affect the amounts reported in the financial statements and accompanying notes.  Actual results could differ from those estimates.

Recently Issued Accounting Standards

In June 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standard Update (ASU) No. 2011-05, Presentation of Comprehensive Income. (ASU 2011-05)  ASU 2011-05 eliminates the option to report other comprehensive income and its components in the consolidated statement of shareholder's equity and comprehensive income and requires an entity to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement or in two separate but consecutive statements.  This pronouncement is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011.  The adoption of ASU 2011-05 concerns presentation and disclosure only and will not have an impact on the Company's consolidated financial position, results of operations, or cash flows.

In May 2011, the FASB issued ASU No. 2011-04, Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and International Financial Reporting Standards (IFRS) (ASU 2011-04).  This pronouncement was issued to provide a consistent definition of fair value and ensure that the fair value measurement and disclosure requirements are similar between U.S. GAAP and IFRS.  ASU 2011-04 changes certain fair value measurement principles and enhances the disclosure requirements particularly for Level 3 fair value measurements.  This pronouncement is effective for reporting periods beginning on or after December 15, 2011.  The adoption of ASU 2011-04 is not expected to have a significant impact on the Company's consolidated financial position, results of operations, or cash flows.

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Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2011

Pension and Other Postretirement Benefit Expense [Abstract]

Components of Net Periodic Benefit Costs

The following tables provide a reconciliation of the changes in the plans' benefit obligations and the fair value of the plans' assets for 2011 and 2010, and a statement of the plans' aggregate funded status as of December 31, 2011 and December 25, 2010 as follows:

	Pension Benefits						Other Benefits
(In thousands)	2011			2010			2011			2010
Change in benefit obligation:
Obligation at beginning of year	$	174,464		$	164,644		$	21,083		$	21,381
Service cost		1,394			823			344			275
Interest cost		9,051			9,374			993			1,334
Actuarial loss (gain)		6,077			12,417			(1,369	)		(697	)
Benefit payments		(10,942	)		(10,636	)		(937	)		(1,100	)
Effect of curtailments and settlements		-			-			-			(167	)
Foreign currency translation adjustment		297			(2,158	)		(169	)		57
Obligation at end of year		180,341			174,464			19,945			21,083
Change in fair value of plan assets:
Fair value of plan assets at beginning of year		156,215			147,703			-			-
Actual return on plan assets		(1,306	)		17,585			-			-
Employer contributions		3,094			3,042			937			1,100
Benefit payments		(10,942	)		(10,636	)		(937	)		(1,100	)
Foreign currency translation adjustment		441			(1,479	)		-			-
Fair value of plan assets at end of year		147,502			156,215			-			-
Underfunded status at end of year	$	(32,839	)	$	(18,249	)	$	(19,945	)	$	(21,083	)

Amounts recognized in accumulated OCI (before the effect of income taxes)

The following represents amounts recognized in accumulated OCI (before the effect of income taxes) at December 31, 2011 and December 25, 2010:

	Pension Benefits				Other Benefits
(In thousands)	2011		2010		2011		2010
Unrecognized net actuarial loss	$	58,436	$	41,935	$	118	$	1,455
Unrecognized prior service cost		3		4		17		16

Funded status of the plans recognized

As of December 31, 2011 and December 25, 2010, the total funded status of the plans recognized in the Consolidated Balance Sheets was as follows:

	Pension Benefits						Other Benefits
(In thousands)	2011			2010			2011			2010
Current liability	$	-		$	-		$	(1,333	)		(1,362	)
Long-term liability		(32,839	)		(18,249	)		(18,612	)		(19,721	)
Total underfunded status	$	(32,839	)	$	(18,249	)	$	(19,945	)	$	(21,083	)

Components of net periodic costs

The components of net periodic benefit cost are as follows:

(In thousands)	2011			2010			2009
Pension benefits:
Service cost	$	1,394		$	823		$	865
Interest cost		9,051			9,374			8,907
Expected return on plan assets		(11,569	)		(11,443	)		(10,732	)
Amortization of prior service cost		2			294			305
Amortization of net loss		2,346			2,307			833
Net periodic benefit cost	$	1,224		$	1,355		$	178
Other benefits:
Service cost	$	344		$	273		$	235
Interest cost		993			1,333			1,824
Amortization of prior service (credit) cost		(3	)		1			2
Amortization of net (gain) loss		(2	)		156			156
Effect of curtailments and settlements		-			25			28
Net periodic benefit cost	$	1,332		$	1,788		$	2,245

Weighted average assumptions used in the measurement of the Company's benefit obligation and net periodic benefit cost are as follows

The weighted average assumptions used in the measurement of the Company's benefit obligations are as follows:

	Pension Benefits				Other Benefits
	2011		2010		2011		2010
Discount rate		4.80%		5.25%		4.97%		5.39%
Expected long-term return on plan assets		7.11%		7.51%		N/A		N/A
Rate of compensation increases		N/A		N/A		5.04%		5.04%
Rate of inflation		3.00%		3.40%		N/A		N/A

The weighted average assumptions used in the measurement of the Company's net periodic benefit cost are as follows:

	Pension Benefits									Other Benefits
	2011			2010			2009			2011			2010			2009
Discount rate		5.25	%		5.77	%		6.44	%		5.39	%		6.08	%		6.24	%
Expected long-term return on plan assets		7.51	%		8.04	%		8.12	%		N/A			N/A			N/A
Rate of compensation increases		3.40	%		3.75	%		2.75	%		5.04	%		5.04	%		5.04	%

Weighted average asset allocation of pension fund assets

The weighted average asset allocation of the Company's pension fund assets are as follows:

	Pension Plan Assets
Asset category	2011			2010
Equity securities (includes equity mutual funds)		80	%		73	%
Fixed income securities (includes fixed income mutual funds)		5			4
Cash and equivalents (includes money market funds)		8			16
Alternative investments		7			7
Total		100	%		100	%

Plan assets at fair value within the fair value hierarchy, by level

The following table sets forth by level, within the fair value hierarchy, the assets of the plans at fair value as of December 31, 2011:

(In thousands)	Fair Value Measurements at December 31, 2011
	Level 1		Level 2		Level 3		Total
Cash and money market funds	$	11,707	$	-	$	-	$	11,707
Common stock (a)		58,498		-		-		58,498
Mutual funds (b)		19,054		47,098		-		66,152
Limited partnerships		-		-		11,145		11,145
Total	$	89,259	$	47,098	$	11,145	$	147,502

(a)	Approximately 88 percent of common stock represents investments in U.S. companies primarily in the health care, utilities, financials, consumer staples, industrials, information technology, and telecommunications sectors.  All investments in common stock are listed on U.S. stock exchanges.
(b)	Approximately 30 percent of mutual funds are actively managed funds and approximately 70 percent of mutual funds are index funds.  Additionally, 32 percent of the mutual funds' assets are invested in U.S. equities, 57 percent in non-U.S. equities, and 11 percent in non-U.S. fixed income securities.

Plan assets measured at fair value using significant unobservable inputs

The table below reflects the changes in the assets of the plan measured at fair value on a recurring basis using significant unobservable inputs (Level 3 hierarchy as defined by ASC 820) during the year ended December 31, 2011:

(In thousands)	Limited Partnerships
Balance, December 25, 2010	$	11,590
Purchases		1,068
Redemptions		(1,668	)
Net appreciation in fair value		155
Balance, December 31, 2011	$	11,145

Future benefit plans payments

The Company expects future benefits to be paid from the plans as follows:

(In thousands)	Pension Benefits		Other Benefits
2012	$	10,311	$	1,333
2013		10,384		1,350
2014		10,513		1,370
2015		10,657		1,433
2016		10,783		1,386
2017-2021		53,809		7,328
Total	$	106,457	$	14,200

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Property, Plant, and Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 673,318	$ 691,289
Property, plant and equipment, accumulated depreciation	(469,574)	(461,791)
Property, plant and equipment, net	203,744	229,498
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	10,932	12,150
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	110,456	115,919
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	541,793	558,775
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 10,137	$ 4,445

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Industry Segments (Details) (USD $)	3 Months Ended		12 Months Ended
	Apr. 02, 2011	Mar. 27, 2010	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Segment Reporting Information [Line Items]
Net Sales			$ 2,417,797,000	$ 2,059,797,000	$ 1,547,225,000
Cost of goods sold			2,115,677,000	1,774,811,000	1,327,022,000
Depreciation and amortization			36,865,000	40,364,000	41,568,000
Selling, general, and administrative expense			135,953,000	131,211,000	116,660,000
Litigation settlement			(10,500,000)
Insurance gain	(6,800,000)	(23,300,000)	0	(22,736,000)	0
Impairment charges			0	0	29,755,000
Operating income			139,802,000	136,147,000	32,220,000
Interest expense			(11,553,000)	(11,647,000)	(9,963,000)
Other expense, net			1,912,000	(2,650,000)	872,000
Income before income taxes			130,161,000	121,850,000	23,129,000
Expenditures for long-lived assets			25,633,000	20,669,000	13,942,000
Segment assets			1,347,604,000	1,258,996,000	1,180,141,000
Percentage of net consolidated sales threshold constituting a major customer			10.00%
United Kingdom [Member]
Segment Reporting Information [Line Items]
Net assets of foreign operations			112,000,000
Mexico [Member]
Segment Reporting Information [Line Items]
Net assets of foreign operations			45,300,000
Luxembourg [Member]
Segment Reporting Information [Line Items]
Net assets of foreign operations			47,900,000
China [Member]
Segment Reporting Information [Line Items]
Net assets of foreign operations			27,300,000
Segment, Geographical, Groups of Countries, Group One [Member]
Segment Reporting Information [Line Items]
Net Sales			2,417,797,000	2,059,797,000	1,547,225,000
Long-lived assets			320,905,000	346,682,000	371,298,000
Segment, Geographical, Groups of Countries, Group One [Member] | United States [Member]
Segment Reporting Information [Line Items]
Net Sales			1,830,001,000	1,567,606,000	1,208,757,000
Long-lived assets			267,060,000	289,714,000	309,986,000
Segment, Geographical, Groups of Countries, Group One [Member] | United Kingdom [Member]
Segment Reporting Information [Line Items]
Net Sales			272,809,000	214,643,000	173,223,000
Long-lived assets			23,962,000	24,088,000	27,312,000
Segment, Geographical, Groups of Countries, Group One [Member] | Country Other [Member]
Segment Reporting Information [Line Items]
Net Sales			314,987,000	277,548,000	165,245,000
Long-lived assets			29,883,000	32,880,000	34,000,000
Tube and fittings [Member]
Segment Reporting Information [Line Items]
Net Sales			1,082,150,000	898,615,000	686,102,000
Brass rod and forgings [Member]
Segment Reporting Information [Line Items]
Net Sales			662,369,000	581,660,000	418,376,000
OEM components, tube and assemblies [Member]
Segment Reporting Information [Line Items]
Net Sales			401,623,000	327,092,000	213,905,000
Valves and plumbing specialties [Member]
Segment Reporting Information [Line Items]
Net Sales			217,985,000	204,074,000	198,333,000
Other products [Member]
Segment Reporting Information [Line Items]
Net Sales			53,670,000	48,356,000	30,509,000
Plumbing and Refrigeration Segment [Member]
Segment Reporting Information [Line Items]
Worldwide sales to one customer					175,100,000
Net Sales			1,330,435,000	1,115,614,000	892,071,000
Cost of goods sold			1,139,932,000	951,170,000	744,880,000
Depreciation and amortization			20,947,000	24,940,000	26,289,000
Selling, general, and administrative expense			84,795,000	78,573,000	74,397,000
Litigation settlement			0
Insurance gain				(22,736,000)
Impairment charges					19,462,000
Operating income			84,761,000	83,667,000	27,043,000
Expenditures for long-lived assets			12,686,000	13,774,000	7,876,000
Segment assets			532,458,000	574,671,000	542,834,000
Single customer percentage of sales during the year (in hundredths)					11.00%
OEM Segment [Member]
Segment Reporting Information [Line Items]
Net Sales			1,119,796,000	958,855,000	664,088,000
Cost of goods sold			1,007,654,000	837,649,000	590,361,000
Depreciation and amortization			14,634,000	14,300,000	14,208,000
Selling, general, and administrative expense			24,838,000	26,789,000	20,501,000
Litigation settlement			0
Insurance gain				0
Impairment charges					10,293,000
Operating income			72,670,000	80,117,000	28,725,000
Expenditures for long-lived assets			12,586,000	6,684,000	6,066,000
Segment assets			296,997,000	296,978,000	284,480,000
Corporate Elimination [Member]
Segment Reporting Information [Line Items]
Net Sales			(32,434,000)	(14,672,000)	(8,934,000)
Cost of goods sold			(31,909,000)	(14,008,000)	(8,219,000)
Depreciation and amortization			1,284,000	1,124,000	1,071,000
Selling, general, and administrative expense			26,320,000	25,849,000	21,762,000
Litigation settlement			(10,500,000)
Insurance gain				0
Impairment charges					0
Operating income			(17,629,000)	(27,637,000)	(23,548,000)
General Corporate [Member]
Segment Reporting Information [Line Items]
Expenditures for long-lived assets			361,000	241,000	0
Segment assets			$ 518,149,000	$ 387,347,000	$ 352,827,000

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CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
CONSOLIDATED STATEMENTS OF INCOME [Abstract]
Net sales	$ 2,417,797	$ 2,059,797	$ 1,547,225
Cost of goods sold	2,115,677	1,774,811	1,327,022
Depreciation and amortization	36,865	40,364	41,568
Selling, general, and administrative expense	135,953	131,211	116,660
Litigation settlement	(10,500)	0	0
Insurance settlements	0	(22,736)	0
Impairment charges	0	0	29,755
Operating income	139,802	136,147	32,220
Interest expense	(11,553)	(11,647)	(9,963)
Other income (expense), net	1,912	(2,650)	872
Income before income taxes	130,161	121,850	23,129
Income tax expense	(43,075)	(34,315)	(17,792)
Consolidated net income	87,086	87,535	5,337
Less net income attributable to noncontrolling interest	(765)	(1,364)	(662)
Net income attributable to Mueller Industries, Inc.	$ 86,321	$ 86,171	$ 4,675
Weighted average shares for basic earnings per share (in shares)	37,835	37,672	37,336
Effect of dilutive stock-based awards (in shares)	361	97	88
Adjusted weighted average shares for diluted earnings per share (in shares)	38,196	37,769	37,424
Basic earnings per share (in dollars per share)	$ 2.28	$ 2.29	$ 0.13
Diluted earnings per share (in dollars per share)	$ 2.26	$ 2.28	$ 0.12
Dividends per share (in dollars per share)	$ 0.40	$ 0.40	$ 0.40

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Other Current Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010
Other Current Liabilities [Abstract]
Accrued discounts and allowances	$ 40.8	$ 35.8
Taxes payable, current	$ 9.3	$ 8.6

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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Comprehensive Income [Member]
Balance at Dec. 27, 2008		$ 401	$ 262,378	$ 550,501	$ (48,113)	$ (64,484)	$ 24,582
Balance (in shares) at Dec. 27, 2008		40,092,000				2,949,000
Additional paid-in capital:
Issuance of shares under incentive stock option plans			(1,295)			10,440
Stock-based compensation expense			2,633
Income tax benefit from exercise of stock options			203
Write-off of excess tax benefits arising from the exercise of stock options			(353)
Issuance of restricted stock			(1,400)			1,400
Retained earnings:
Net income attributable to Mueller Industries, Inc.	4,675			4,675
Dividends paid or payable to stockholders of Mueller Industries, Inc.				(14,958)
Accumulated other comprehensive (loss) income:
Foreign currency translation					13,278		28
Net change with respect to derivative instruments and hedging activities, net of tax					4,097		1,952
Net actuarial loss on pension and postretirement obligations, net of tax of $4,786, $1,631, and $2,138					(5,655)
Other, net					289
Total other comprehensive (loss) income attributable to Mueller Industries, Inc.					12,009
Treasury stock:
Issuance of shares under incentive stock option plans (in shares)						(477,000)
Repurchase of common stock (in shares)						34,000
Repurchase of common stock						(870)
Issuance of restricted stock (in shares)						(64,000)
Noncontrolling interest:
Net income attributable to noncontrolling interest	662						662
Dividends paid to noncontrolling interests	1,449						(1,449)
Comprehensive income:
Consolidated net income	5,337							5,337
Consolidated other comprehensive (loss) income								13,989
Consolidated comprehensive income								19,326
Less: comprehensive income attributable to noncontrolling interest								(2,642)
Comprehensive income attributable to Mueller Industries, Inc.								16,684
Balance at Dec. 26, 2009		401	262,166	540,218	(36,104)	(53,514)	25,775
Balance (in shares) at Dec. 26, 2009		40,092,000				2,442,000
Additional paid-in capital:
Issuance of shares under incentive stock option plans			(394)			3,240
Stock-based compensation expense			2,877
Income tax benefit from exercise of stock options			145
Write-off of excess tax benefits arising from the exercise of stock options			0
Issuance of restricted stock			(1,561)			1,561
Retained earnings:
Net income attributable to Mueller Industries, Inc.	86,171			86,171
Dividends paid or payable to stockholders of Mueller Industries, Inc.				(15,110)
Accumulated other comprehensive (loss) income:
Foreign currency translation	(9,480)				(977)		763
Net change with respect to derivative instruments and hedging activities, net of tax	566				376		0
Net actuarial loss on pension and postretirement obligations, net of tax of $4,786, $1,631, and $2,138					(402)
Other, net					61
Total other comprehensive (loss) income attributable to Mueller Industries, Inc.					(942)
Treasury stock:
Issuance of shares under incentive stock option plans (in shares)						(149,000)
Repurchase of common stock (in shares)						15,000
Repurchase of common stock						(418)
Issuance of restricted stock (in shares)						(71,000)
Noncontrolling interest:
Net income attributable to noncontrolling interest	1,364						1,364
Dividends paid to noncontrolling interests	741						(741)
Comprehensive income:
Consolidated net income	87,535							87,535
Consolidated other comprehensive (loss) income								(180)
Consolidated comprehensive income								87,355
Less: comprehensive income attributable to noncontrolling interest								(2,127)
Comprehensive income attributable to Mueller Industries, Inc.								85,228
Balance at Dec. 25, 2010	815,897	401	263,233	611,279	(37,046)	(49,131)	27,161
Balance (in shares) at Dec. 25, 2010		40,092,000				2,237,000
Additional paid-in capital:
Issuance of shares under incentive stock option plans			2,340			10,637
Stock-based compensation expense			3,482
Income tax benefit from exercise of stock options			853
Write-off of excess tax benefits arising from the exercise of stock options			0
Issuance of restricted stock			(2,972)			2,972
Retained earnings:
Net income attributable to Mueller Industries, Inc.	86,321			86,321
Dividends paid or payable to stockholders of Mueller Industries, Inc.				(15,220)
Accumulated other comprehensive (loss) income:
Foreign currency translation	(10,396)				(916)		1,148
Net change with respect to derivative instruments and hedging activities, net of tax	(422)				(988)		0
Net actuarial loss on pension and postretirement obligations, net of tax of $4,786, $1,631, and $2,138					(10,378)
Other, net					(81)
Total other comprehensive (loss) income attributable to Mueller Industries, Inc.					(12,363)
Treasury stock:
Issuance of shares under incentive stock option plans (in shares)						(464,000)
Repurchase of common stock (in shares)	2,400,000					214,000
Repurchase of common stock						(9,098)
Issuance of restricted stock (in shares)						(132,000)
Noncontrolling interest:
Net income attributable to noncontrolling interest	765						765
Dividends paid to noncontrolling interests	0						0
Comprehensive income:
Consolidated net income	87,086							87,086
Consolidated other comprehensive (loss) income								(11,215)
Consolidated comprehensive income								75,871
Less: comprehensive income attributable to noncontrolling interest								(1,913)
Comprehensive income attributable to Mueller Industries, Inc.								73,958
Balance at Dec. 31, 2011	$ 884,762	$ 401	$ 266,936	$ 682,380	$ (49,409)	$ (44,620)	$ 29,074
Balance (in shares) at Dec. 31, 2011		40,092,000				1,855,000

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Derivative Instruments and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2011

Derivative Instruments and Hedging Activities [Abstract]

Summary of derivative instruments activities in statement of financial position

Derivative instruments designated as cash flow hedges under ASC 815 are reflected in the Consolidated Financial Statements as follows:

	December 31, 2011
(In thousands)	Location		Fair value
Commodity contracts	Other current assets:	Gain positions	$	85
		Loss positions		(25	)
	Other current liabilities:	Gain positions		339
		Loss positions		(1,078	)

	December 25, 2010
(In thousands)	Location		Fair value
Commodity contracts	Other current assets:	Gain positions	$	891

Summary of derivative instruments activities in statement of financial performance

The following tables summarize activities related to the Company's derivative instruments, classified as cash flow hedges in accordance with ASC 815:

	Gain (Loss) Recognized in Accumulated OCI (Effective Portion), Net of Tax
			For the Year Ended
(In thousands)			December 31, 2011				December 25, 2010
Commodity contracts		$		(427	)	$		1,684

	(Gain) Loss Reclassified from Accumulated OCI into Income (Effective Portion), Net of Tax
		For the Year Ended
(In thousands)	Location	December 31, 2011			December 25, 2010
Commodity contracts	Cost of goods sold	$	(561	)	$	(1,308	)

Schedule of fair value hedges

The following tables summarize the gains (losses) on the Company's fair value hedges:

	Gains (Losses) on Fair Value Hedges for the Year Ended December 31, 2011
	Location	Amount
(In thousands)
Gain on the derivatives in designated and qualifying fair value hedges:
Commodity Contracts	Cost of goods sold	$	4,509
(Loss) on the hedged item in designated and qualifying fair value hedges:
Inventory	Cost of goods sold	$	(4,344	)

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Industry Segments

12 Months Ended

Dec. 31, 2011

Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]

Industry Segments

Note 15 – Industry Segments

The Company's reportable segments are Plumbing & Refrigeration and OEM.  For disclosure purposes, as permitted under ASC 280, Segment Reporting, certain operating segments are aggregated into reportable segments.  The Plumbing & Refrigeration segment is composed of Standard Products (SPD), European Operations, and Mexican Operations.  The OEM segment is composed of Industrial Products (IPD), Engineered Products (EPD), and Mueller-Xingrong.  These segments are classified primarily by the markets for their products.  Performance of segments is generally evaluated by their operating income.  Intersegment transactions are generally conducted on an arms-length basis.

SPD manufactures copper tube and fittings, plastic fittings, plastic pipe, and line sets.  These products are manufactured in the U.S.  Outside the U.S., the Company's European Operations manufacture copper tube, which is sold in Europe and the Middle East.  SPD also imports and resells brass and plastic plumbing valves, malleable iron fittings, faucets, and plumbing specialty products.  Mexican Operations consist of pipe nipple manufacturing and import distribution businesses including product lines of malleable iron fittings and other plumbing specialties.  The European Operations consist of copper tube manufacturing and the import distribution of fittings, valves, and plumbing specialties primarily in the U.K. and Ireland.  The Plumbing & Refrigeration segment's products are sold primarily to plumbing, refrigeration, and air-conditioning wholesalers, hardware wholesalers and co-ops, and building product retailers.

IPD manufactures brass rod, impact extrusions, and forgings as well as a variety of end products including plumbing brass, automotive components, valves, and fittings.  EPD manufactures and fabricates valves and assemblies for the refrigeration, air-conditioning, gas appliance, and barbecue grill markets and specialty copper, copper-alloy, and aluminum tube.  Mueller-Xingrong manufactures engineered copper tube primarily for air-conditioning applications.  These products are sold primarily to OEM customers.

Summarized product line, geographic, and segment information is shown in the following tables.  Geographic sales data indicates the location from which products are shipped.  Unallocated expenses include general corporate expenses, plus certain charges or credits not included in segment activity.

Worldwide sales to one customer in the Plumbing & Refrigeration segment totaled $175.1 million in 2009, which represented 11 percent of the Company's consolidated net sales.  No other customer accounted for more than 10 percent of consolidated net sales.  During 2010 and 2011, no one customer exceeded 10 percent of worldwide sales.

Net Sales by Major Product Line:

(In thousands)	2011		2010		2009
Tube and fittings	$	1,082,150	$	898,615	$	686,102
Brass rod and forgings		662,369		581,660		418,376
OEM components, tube & assemblies		401,623		327,092		213,905
Valves and plumbing specialties		217,985		204,074		198,333
Other		53,670		48,356		30,509
	$	2,417,797	$	2,059,797	$	1,547,225

Geographic Information:

(In thousands)	2011		2010		2009
Net sales:
United States	$	1,830,001	$	1,567,606	$	1,208,757
United Kingdom		272,809		214,643		173,223
Other		314,987		277,548		165,245
	$	2,417,797	$	2,059,797	$	1,547,225
Long-lived assets:
United States	$	267,060	$	289,714	$	309,986
United Kingdom		23,962		24,088		27,312
Other		29,883		32,880		34,000
	$	320,905	$	346,682	$	371,298

Net assets of foreign operations at December 31, 2011 included $112.0 million in the United Kingdom, $45.3 million in Mexico, $47.9 million in Luxembourg, and $27.3 million in China.

Segment Information:

	For the Year Ended December 31, 2011
(In thousands)	Plumbing & Refrigeration Segment		OEM Segment		Corporate and Eliminations			Total
Net sales	$	1,330,435	$	1,119,796	$	(32,434	)	$	2,417,797
Cost of goods sold		1,139,932		1,007,654		(31,909	)		2,115,677
Depreciation and amortization		20,947		14,634		1,284			36,865
Selling, general, and administrative expense		84,795		24,838		26,320			135,953
Litigation settlement		-		-		(10,500	)		(10,500	)
Operating income		84,761		72,670		(17,629	)		139,802
Interest expense									(11,553	)
Other expense, net									1,912
Income before income taxes								$	130,161

Segment Information (continued):

	For the Year Ended December 25, 2010
(In thousands)	Plumbing & Refrigeration Segment			OEM Segment		Corporate and Eliminations			Total
Net sales	$	1,115,614		$	958,855	$	(14,672	)	$	2,059,797
Cost of goods sold		951,170			837,649		(14,008	)		1,774,811
Depreciation and amortization		24,940			14,300		1,124			40,364
Selling, general, and administrative expense		78,573			26,789		25,849			131,211
Insurance settlements		(22,736	)		-		-			(22,736	)
Operating income		83,667			80,117		(27,637	)		136,147
Interest expense										(11,647	)
Other expense, net										(2,650	)
Income before income taxes									$	121,850

	For the Year Ended December 26, 2009
(In thousands)	Plumbing & Refrigeration Segment		OEM Segment		Corporate and Eliminations			Total
Net sales	$	892,071	$	664,088	$	(8,934	)	$	1,547,225
Cost of goods sold		744,880		590,361		(8,219	)		1,327,022
Depreciation and amortization		26,289		14,208		1,071			41,568
Selling, general, and administrative expense		74,397		20,501		21,762			116,660
Impairment charges		19,462		10,293		-			29,755
Operating income		27,043		28,725		(23,548	)		32,220
Interest expense									(9,963	)
Other income, net									872
Income before income taxes								$	23,129

(In thousands)	2011		2010		2009
Expenditures for long-lived assets (including business acquisitions):
Plumbing & Refrigeration	$	12,686	$	13,774	$	7,876
OEM		12,586		6,684		6,066
General corporate		361		241		-
	$	25,633	$	20,699	$	13,942
Segment assets:
Plumbing & Refrigeration	$	532,458	$	574,671	$	542,834
OEM		296,997		296,978		284,480
General corporate		518,149		387,347		352,827
	$	1,347,604	$	1,258,996	$	1,180,141

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Industry Segments (Tables)

12 Months Ended

Dec. 31, 2011

Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]

Net Sales by Major Product Line

Net Sales by Major Product Line:

(In thousands)	2011		2010		2009
Tube and fittings	$	1,082,150	$	898,615	$	686,102
Brass rod and forgings		662,369		581,660		418,376
OEM components, tube & assemblies		401,623		327,092		213,905
Valves and plumbing specialties		217,985		204,074		198,333
Other		53,670		48,356		30,509
	$	2,417,797	$	2,059,797	$	1,547,225

Geographic Information

Geographic Information:

(In thousands)	2011		2010		2009
Net sales:
United States	$	1,830,001	$	1,567,606	$	1,208,757
United Kingdom		272,809		214,643		173,223
Other		314,987		277,548		165,245
	$	2,417,797	$	2,059,797	$	1,547,225
Long-lived assets:
United States	$	267,060	$	289,714	$	309,986
United Kingdom		23,962		24,088		27,312
Other		29,883		32,880		34,000
	$	320,905	$	346,682	$	371,298

Segment Information

Segment Information:

	For the Year Ended December 31, 2011
(In thousands)	Plumbing & Refrigeration Segment		OEM Segment		Corporate and Eliminations			Total
Net sales	$	1,330,435	$	1,119,796	$	(32,434	)	$	2,417,797
Cost of goods sold		1,139,932		1,007,654		(31,909	)		2,115,677
Depreciation and amortization		20,947		14,634		1,284			36,865
Selling, general, and administrative expense		84,795		24,838		26,320			135,953
Litigation settlement		-		-		(10,500	)		(10,500	)
Operating income		84,761		72,670		(17,629	)		139,802
Interest expense									(11,553	)
Other expense, net									1,912
Income before income taxes								$	130,161

Segment Information (continued):

	For the Year Ended December 25, 2010
(In thousands)	Plumbing & Refrigeration Segment			OEM Segment		Corporate and Eliminations			Total
Net sales	$	1,115,614		$	958,855	$	(14,672	)	$	2,059,797
Cost of goods sold		951,170			837,649		(14,008	)		1,774,811
Depreciation and amortization		24,940			14,300		1,124			40,364
Selling, general, and administrative expense		78,573			26,789		25,849			131,211
Insurance settlements		(22,736	)		-		-			(22,736	)
Operating income		83,667			80,117		(27,637	)		136,147
Interest expense										(11,647	)
Other expense, net										(2,650	)
Income before income taxes									$	121,850

	For the Year Ended December 26, 2009
(In thousands)	Plumbing & Refrigeration Segment		OEM Segment		Corporate and Eliminations			Total
Net sales	$	892,071	$	664,088	$	(8,934	)	$	1,547,225
Cost of goods sold		744,880		590,361		(8,219	)		1,327,022
Depreciation and amortization		26,289		14,208		1,071			41,568
Selling, general, and administrative expense		74,397		20,501		21,762			116,660
Impairment charges		19,462		10,293		-			29,755
Operating income		27,043		28,725		(23,548	)		32,220
Interest expense									(9,963	)
Other income, net									872
Income before income taxes								$	23,129

Segment Information by Assets

(In thousands)	2011		2010		2009
Expenditures for long-lived assets (including business acquisitions):
Plumbing & Refrigeration	$	12,686	$	13,774	$	7,876
OEM		12,586		6,684		6,066
General corporate		361		241		-
	$	25,633	$	20,699	$	13,942
Segment assets:
Plumbing & Refrigeration	$	532,458	$	574,671	$	542,834
OEM		296,997		296,978		284,480
General corporate		518,149		387,347		352,827
	$	1,347,604	$	1,258,996	$	1,180,141

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SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2011

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS [Abstract]

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS

MUELLER INDUSTRIES, INC.

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

Years Ended December 31, 2011, December 25, 2010, and December 26, 2009

			Additions
	Balance at		Charged to									Balance
	beginning		costs and			Other						at end
(In thousands)	of year		expenses			additions				Deductions		of year
2011
Allowance for doubtful accounts	$	5,447	$	(229	)	$	(2	)	(1)	$	3,652	$	1,564
Environmental reserves	$	23,902	$	392		$	-			$	1,402	$	22,892
Valuation allowance for deferred tax assets	$	28,714	$	(443	)	$	1,434		(2)	$	-	$	29,705
2010
Allowance for doubtful accounts	$	5,947	$	4,763		$	111		(1)	$	5,374	$	5,447
Environmental reserves	$	23,268	$	5,378		$	(6	)		$	4,738	$	23,902
Valuation allowance for deferred tax assets	$	33,812	$	(5,496	)	$	398			$	-	$	28,714
2009
Allowance for doubtful accounts	$	6,690	$	506		$	85		(1)	$	1,334	$	5,947
Environmental reserves	$	23,248	$	1,087		$	5			$	1,072	$	23,268
Valuation allowance for deferred tax assets	$	32,624	$	52		$	1,136		(2)	$	-	$	33,812

(1) Other consists primarily of bad debt recoveries as well as the effect of fluctuating foreign currency exchange rates in all years presented.

(2) Other includes the additions to valuation allowances in which previously unrecorded gross deferred tax assets and valuation allowances were recognized.

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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Accumulated other comprehensive (loss) income:
Net change with respect to derivative instruments and hedging activities, tax	$ 559	$ (191)	$ (1,794)
Net actuarial loss on pension and postretirement obligations, tax	4,786	1,631	2,138
Noncontrolling interest:
Net change with respect to derivative instruments and hedging activities, tax			$ (279)

XML

CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010
Current assets:
Cash and cash equivalents	$ 514,162	$ 394,139
Accounts receivable, less allowance for doubtful accounts of $1,564 in 2011 and $5,447 in 2010	250,027	269,258
Inventories	219,193	209,892
Current deferred income taxes	21,104	19,227
Other current assets	22,213	19,798
Total current assets	1,026,699	912,314
Property, plant, and equipment, net	203,744	229,498
Goodwill, net	102,250	102,250
Other assets	14,911	14,934
Total Assets	1,347,604	1,258,996
Current liabilities:
Current portion of debt	41,265	32,020
Accounts payable	65,545	67,849
Accrued wages and other employee costs	39,319	33,338
Other current liabilities	67,115	61,920
Total current liabilities	213,244	195,127
Long-term debt, less current portion	156,476	158,226
Pension liabilities	32,839	18,249
Postretirement benefits other than pensions	21,405	22,690
Environmental reserves	22,892	23,902
Deferred income taxes	14,856	24,081
Other noncurrent liabilities	1,130	824
Total liabilities	462,842	443,099
Mueller Industries, Inc. stockholders' equity:
Preferred stock - $1.00 par value; shares authorized 5,000,000; none outstanding	0	0
Common stock - $.01 par value; shares authorized 100,000,000; issued 40,091,502; outstanding 38,236,568 in 2011 and 37,854,760 in 2010	401	401
Additional paid-in capital	266,936	263,233
Retained earnings	682,380	611,279
Accumulated other comprehensive loss	(49,409)	(37,046)
Treasury common stock, at cost	(44,620)	(49,131)
Total Mueller Industries, Inc. stockholders' equity	855,688	788,736
Noncontrolling interest	29,074	27,161
Total equity	884,762	815,897
Commitments and contingencies	0	0
Total Liabilities and Equity	$ 1,347,604	$ 1,258,996

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2011

Commitments and Contingencies [Abstract]

Commitments and Contingencies

Note 10 – Commitments and Contingencies

Environmental

The Company is subject to environmental standards imposed by federal, state, local, and foreign environmental laws and regulations.  For all properties, the Company has provided and charged to expense $0.4 million in 2011, $5.4 million in 2010, and $1.1 million in 2009 for pending environmental matters.  Environmental costs related to non-operating properties are classified as a component of other income (expense), net and costs related to operating properties are classified as cost of goods sold.  Environmental reserves totaled $22.9 million at December 31, 2011 and $23.9 million at December 25, 2010.  As of December 31, 2011, the Company expects to spend on existing environmental matters $1.3 million in 2012, $1.1 million in 2013, $1.0 million in 2014, $0.5 million in 2015, $0.5 million in 2016, and $9.0 million thereafter.  The timing of a potential payment for a $9.5 million settlement offer has not yet been determined.

Non-operating Properties

Southeast Kansas Sites

By letter dated October 10, 2006, the Kansas Department of Health and Environment (KDHE) advised the Company that environmental contamination has been identified at a former smelter site in southeast Kansas.  KDHE asserts that the Company is a corporate successor to an entity that is alleged to have owned and operated the smelter from 1915 to 1918.  The Company has since been advised of a possible connection between that same entity and two other former smelter sites in Kansas.  KDHE has requested that the Company and other potentially responsible parties (PRPs) negotiate a consent order with KDHE to address contamination at these sites.  The Company has participated in preliminary discussions with KDHE and the other PRPs.  The Company believes it is not liable for the contamination but as an alternative to litigation, the Company has entered into settlement negotiations with one of the other PRPs.  The negotiations are ongoing.  In 2008, the Company established a reserve of $9.5 million for this matter.  Due to the ongoing nature of negotiations, the timing of potential payment has not yet been determined.  The Company has also agreed to share the costs of a preliminary site assessment at one of the former smelter sites with two other PRPs and currently is negotiating the terms of an agreement and work plan with KDHE by which the PRPs would study the site without conceding liability.

Eureka Mills Site

On December 2, 2010, the United States District Court for Utah entered a consent decree between the Company, the United States and the State of Utah.  The decree resolves the claims asserted by the U.S. and the State of Utah related to Eureka Mills Superfund Site located in Juab County, Utah.  The Company's connection to the Eureka Mills Site is through land within the site that was owned by Sharon Steel Corporation (Sharon), its predecessor, and a 1979 transaction with UV Industries (UV) in which Sharon allegedly assumed certain of UV's liabilities.  During 2010, the Company provided $2.5 million to settle its claims, of which $250 thousand was paid to the State of Utah in December 2010 and the remainder was paid to the U.S. in February 2011.

Shasta Area Mine Sites

Mining Remedial Recovery Company (MRRC), a wholly owned subsidiary, owns certain inactive mines in Shasta County, California.  MRRC has continued a program, begun in the late 1980's, of sealing mine portals with concrete plugs in mine adits, which were discharging water.  The sealing program has achieved significant reductions in the metal load in discharges from these adits; however, additional reductions are required pursuant to an order issued by the California Regional Water Quality Control Board (QCB).  In response to a 1996 Order issued by the QCB, MRRC completed a feasibility study in 1997 describing measures designed to mitigate the effects of acid rock drainage.  In December 1998, the QCB modified the 1996 order extending MRRC's time to comply with water quality standards.  In September 2002, the QCB adopted a new order requiring MRRC to adopt Best Management Practices (BMP) to control discharges of acid mine drainage.  That order extended the time to comply with water quality standards until September 2007.  During that time, implementation of BMP further reduced impacts of acid rock drainage; however, full compliance has not been achieved.  The QCB is presently renewing MRRC's discharge permit and will concurrently issue a new order.  It is expected that the new permit will include an order requiring continued implementation of BMP through 2015 to address residual discharges of acid rock drainage.  At this site, MRRC spent approximately $0.6 million in 2011, $0.7 million in 2010 and $0.5 million in 2009, and estimates that it will spend between approximately $8.2 million and $11.5 million over the next 20 years.

Lead Refinery Site

U.S.S. Lead Refinery, Inc. (Lead Refinery), a non-operating wholly owned subsidiary of MRRC, has conducted corrective action and interim remedial activities and studies (collectively, Site Activities) at Lead Refinery's East Chicago, Indiana site pursuant to the Resource Conservation and Recovery Act.  Site Activities, which began in December 1996, have been substantially concluded.  Lead Refinery is required to perform monitoring and maintenance activities with respect to Site Activities pursuant to a post-closure permit issued by the Indiana Department of Environmental Management (IDEM) effective as of January 22, 2008.  Lead Refinery spent approximately $0.1 million annually in 2011, 2010 and 2009 with respect to this site.  Approximate costs to comply with the post-closure permit, including associated general and administrative costs, are between $2.1 million and $3.3 million over the next 20 years.

On April 9, 2009, pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the U.S. Environmental Protection Agency (EPA) added the Lead Refinery site to the National Priorities List (NPL).  The NPL is a list of priority sites where the EPA has determined that there has been a release or threatened release of contaminants that warrant investigation and, if appropriate, remedial action.  The NPL does not assign liability to any party including the owner or operator of a property placed on the NPL.  The placement of a site on the NPL does not necessarily mean that remedial action must be taken.  On July 17, 2009, Lead Refinery received a written notice from the EPA that the agency is of the view that Lead Refinery may be a PRP under CERCLA in connection with the release or threat of release of hazardous substances including lead into a residential area adjacent to the site.  PRPs under CERCLA include current and former owners and operators of a site, persons who arranged for disposal or treatment of hazardous substances at a site, or persons who accepted hazardous substances for transport to a site.

The Company monitors EPA releases and periodically communicates with the EPA to inquire of the status of the Lead Refinery site.  As of December 31, 2011, the EPA has not conducted an investigation of the Lead Refinery site, proposed remedies, or informed Lead Refinery that it is a PRP at the Lead Refinery site.  Until the extent of remedial action is determined, the Company is unable to determine the likelihood of a material adverse outcome or the amount or range of a potential loss with respect to placement of this site on the NPL or in connection with the notice of potential liability concerning the residential area.  Lead Refinery lacks the financial resources needed to undertake any investigations or remedial action that may be required by the EPA pursuant to CERCLA.

Operating Properties

Mueller Copper Tube Products, Inc.

In 1999, Mueller Copper Tube Products, Inc. (MCTP), a wholly owned subsidiary, commenced a cleanup and remediation of soil and groundwater at its Wynne, Arkansas plant.  MCTP is currently removing trichloroethylene, a cleaning solvent formerly used by MCTP, from the soil and groundwater.  On August 30, 2000, MCTP received approval of its Final Comprehensive Investigation Report and Storm Water Drainage Investigation Report addressing the treatment of soils and groundwater from the Arkansas Department of Environmental Quality (ADEQ).  The Company established a reserve for this project in connection with the acquisition of MCTP in 1998.  Effective November 17, 2008, MCTP entered into a Settlement Agreement and Administrative Order by Consent to submit a Supplemental Investigation Work Plan (SIWP) and subsequent Final Remediation Work Plan for the site.  By letter dated January 20, 2010, ADEQ approved the SIWP as submitted, with changes acceptable to the Company.  On December 16, 2011, MCTP entered into an amended Administrative Order by Consent to prepare and implement a revised Remediation Work Plan regarding final remediation for the Site.  Costs to implement the work plans, including associated general and administrative costs, are approximately $0.9 million over the next 10 years.

Belding, Michigan Lead Matters

In 2009 and 2010, in response to requests from the Michigan Department of Environmental Quality (MDEQ), Extruded Metals, Inc. (Extruded), a wholly owned subsidiary, conducted stack emissions testing of the stationary sources at its Belding, Michigan facility (the Belding Facility).  The results of tests on the West Chip Dryer showed non-compliance with certain emission limitations in the facility's air use permit for that process, including the limitation for lead.  Modifications were made to the emissions control equipment on the West Chip Dryer, and subsequent testing demonstrated all stationary sources at the Belding Facility to be in compliance with the requirements of their air use permits.

In December 2009 and August 2010, the MDEQ issued a notice of violation and an enforcement notice with respect to the prior West Chip Dryer permit violations.  Extruded entered into an administrative consent order (ACO) with the MDEQ to resolve the allegations contained in the notices.  Under the ACO, the MDEQ imposed and Extruded has paid a civil fine in the amount of $176 thousand as part of the resolution of those allegations.  Extruded has satisfied all of its obligations under the ACO.

Ambient air monitoring conducted by the MDEQ downwind of the Belding Facility demonstrated periodic exceedances of the new National Ambient Air Quality Standards (NAAQS) for lead.  The MDEQ requested that Extruded submit an application for a new air use permit for the Belding Facility that would ensure compliance with that new federal standard.  The application was submitted to the MDEQ on January 21, 2011, and the new air permit was issued on October 20, 2011.  The permit requires Extruded to raise the stack height on the facility's West Chip Dryer that is presently in operation, and on the East Chip Dryer that is presently not in operations, before it is returned to operation.  Extruded has raised the stack height on the West Chip Dryer, and has no present plans to return the East Chip Dryer to operation.

In October 2010, the MDEQ conducted testing of lead levels in soils on properties upwind and downwind of the Belding Facility.  Results of that testing showed exceedances of the Michigan generic residential direct contact cleanup criteria for lead on a number of the downwind properties.  Extruded has investigated the extent of this condition and performed remediation to the extent required by environmental laws and in accordance with a plan approved by the MDEQ in April 2011.  In January 2012, Extruded submitted a final Certification Report to the MDEQ documenting its completion of that remediation.  The Company provided $0.4 million in 2010 for this matter, and is pursuing potential remedies from the previous owner.  The Company does not expect additional material losses associated with these environmental matters.

In November 2010, Extruded received a request for information under Section 114(a) of the Clean Air Act from the EPA.  The focus of the EPA's information request was the Belding Facility's compliance with the National Emissions Standards for Hazardous Air Pollutants for Secondary Nonferrous Metals Processing Area Sources, 40 C.F.R. § 63.11462 (Subpart TTTTTT).  Extruded responded to the information request and advised the EPA of its position that it was not subject to regulation under Subpart TTTTTT.  The state has requested that Extruded request an applicability determination from the EPA.  The request has been made and Extruded is awaiting a response.

The estimates contained in the environmental reserves are based on assumptions that are highly subjective.  Many of the remedial activities performed by the Company are pursuant to performance-based obligations imposed by various regulatory bodies in which certain standards regarding levels of contaminants must be met.  The most subjective assumption that affects the estimates at these sites is the assumed length of time to comply with the remedial requirements set by the regulatory authorities.  This assumption is subject to change based on the regulatory environment, unanticipated delays and events that could limit access to these sites, unforeseen negative sampling results, and other factors.  Changes in any of these factors could have a material impact on future environmental expense.

Carrier ACR Tube Action

The Company has been named as a defendant in a pending litigation (the Carrier ACR Tube Action) brought by Carrier Corporation, Carrier S.A., and Carrier Italia S.p.A. (collectively, Carrier), direct purchasers of copper tube.  The Carrier ACR Tube Action was filed in March 2006 in the United States District Court for the Western District of Tennessee.  The Carrier ACR Tube Action alleges anticompetitive activities with respect to the sale of copper tube used in, among other things, the manufacturing of air-conditioning and refrigeration units.  The Company and Mueller Europe, Limited (Mueller Europe) are named in the Carrier ACR Tube Action.  The Carrier ACR Tube Action seeks monetary and other relief.

In July 2007, the Carrier ACR Tube Action was dismissed in its entirety for lack of subject matter jurisdiction as to all defendants.  In August 2007, plaintiffs filed with the United States Court of Appeals for the Sixth Circuit a notice of appeal from the judgment and order dismissing the complaint in the Carrier ACR Tube Action.  The Company and Mueller Europe filed notices of cross-appeal in August 2007.

In October 2007, Carrier filed with the United States Court of Appeals for the Sixth Circuit a motion to dismiss the cross-appeals, which the Court denied in December 2007.  Briefing on the appeals occurred in May 2009 and oral argument took place in October 2009.

Pursuant to stipulations of dismissal, the Court dismissed the Company's and Mueller Europe's cross-appeals against Carrier, and Carrier's appeal as against the Company and Mueller Europe, in November 2011.  This matter is now resolved.

United States Department of Commerce Antidumping Review

On December 24, 2008, the United States Department of Commerce (DOC) initiated an antidumping administrative review of the antidumping duty order covering circular welded non-alloy steel pipe and tube from Mexico to determine the final antidumping duties owed on U.S. imports during the period November 1, 2007, through October 31, 2008, by certain subsidiaries of the Company.  On April 19, 2010, the DOC published the final results of this review and assigned Mueller Comercial de Mexico, S. de R.L. de C.V. (Mueller Comercial) an antidumping duty rate of 48.3 percent.  The Company has appealed the final determination to the U.S. Court of International Trade (CIT).  On December 16, 2011, the CIT issued a decision to remand the final results back to DOC to reconsider its decision.  DOC is ordered to file its remand results with the CIT by April 16, 2012.  The Company anticipates that certain of its subsidiaries will incur antidumping duties on subject imports made during the period of review and, as such, established a reserve of approximately $4.2 million for this matter.

On December 23, 2009, the DOC initiated an antidumping administrative review of the antidumping duty order covering circular welded non-alloy steel pipe and tube from Mexico for the November 1, 2008, through October 31, 2009, period of review.  The DOC selected Mueller Comercial as a respondent for this period of review.  On June 21, 2011, the DOC published the final results of this review and assigned Mueller Comercial an antidumping duty rate of 19.8 percent.  On August 22, 2011, the Company appealed the final results to the CIT.  The Company anticipates that certain of its subsidiaries will incur antidumping duties on subject imports made during the period of review and, as such, established a reserve of approximately $1.0 million for this matter.

On December 28, 2010, the DOC initiated an antidumping administrative review of the antidumping duty order covering circular welded non-alloy steel pipe and tube from Mexico for the November 1, 2009, through October 31, 2010, period of review.  The DOC selected Mueller Comercial as a respondent for this period of review.  In August 2011, the DOC issued a preliminary determination to rescind the review based on a finding that Mueller Comercial did not ship subject merchandise to the United States during the relevant period of review.  By the end of the year, the DOC should issue a final determination which, if the result mirrors the preliminary determination, would result in zero antidumping liability for the Company and its subsidiaries for imports made during the period of review.  Until the final determination is issued, however, the Company cannot estimate the impact, if any, that this matter will have on its financial position, results of operations, or cash flows.

United States Department of Commerce and United States International Trade Commission Antidumping Investigations

On September 30, 2009, two subsidiaries of the Company, along with Cerro Flow Products, Inc. and KobeWieland Copper Products LLC (collectively, Petitioners), jointly filed antidumping petitions with the DOC and the U.S. International Trade Commission (ITC) alleging that imports of seamless refined copper pipe and tube from China and Mexico (subject imports) were being sold at less than fair value and were causing material injury (and threatening material injury) to the domestic industry.  On October 1, 2010, the DOC published its final affirmative determinations, finding antidumping rates from 24.89 percent to 27.16 percent for Mexico (as amended), and from 11.25 percent to 60.85 percent for China.

On November 22, 2010, the ITC issued its final affirmative determination that subject imports from China and Mexico threatened material injury to the domestic industry.  Also on November 22, 2010, the DOC published antidumping orders, with the effect that importers were required to post antidumping cash deposits at rates ranging from 24.89 percent to 27.16 percent (for subject imports from Mexico) and from 11.25 percent to 60.85 percent (for subject imports from China).

On December 22, 2010, certain Mexican parties requested panel reviews under the North American Free Trade Agreement (NAFTA) in order to appeal the ITC final determination as to Mexico.  Following a period of litigation, the last of the Mexican parties withdrew its allegations on December 8, 2011, with the effect that the ITC final determination as to Mexico shall remain in force.

On July 7, 2011, the DOC initiated a new shipper review of certain entries from a Mexican processor of copper tube, GD Affiliates S.de R.L. de C.V., in order to establish a company-specific dumping rate for this company based on the period November 22, 2010 through April 30, 2011.  The review is expected to be completed sometime in 2012.  At this time, the Company is unable to know the final disposition of the review.

On December 31, 2011, the DOC initiated administrative reviews of several Chinese and Mexican copper tube producers and/or exporters to the United States - including  IUSA, S.A. de C.V. (Mexico), GD Affiliates S. de R.L. de C.V. (Mexico), Hong Kong GD Trading Co., Ltd. (Mexico), Nacional de Cobre, S.A. de C.V. (Mexico), Golden Dragon Holding Hong Kong International Co., Ltd. (China), Golden Dragon Precise Copper Tube Group, Inc. (China), Hong Kong GD Trading Co., Ltd. (China), Hong Kong Hailiang Metal Trading Limited (China), Luvata Alltop Zhongshan Ltd. (China), Luvata Tube Zhongshan Ltd. (China), Ningbo Jintian Copper Tube Co., Ltd. (China), Shanghai Hailiang Copper Co., Ltd. (China), Sinochem Ningbo Import & Export Co., Ltd. (China), Sinochem Ningbo Ltd. (China), Zhejiang Hailiang Co., Ltd. (China), Zhejiang Jiahe Pipes Inc. (China), and Zhejiang Naile Copper Co., Ltd. (China) - in order to establish company-specific dumping rates based on the period November 22, 2010 through October 31, 2011.  On February 22, 2012, the DOC recinded its review of IUSA, S.A. de C.V. (Mexico).  The reviews are expected to be completed sometime in 2013.  At this time, the Company is unable to know the final disposition of these reviews.

Supplier Litigation

On May 6, 2011, the Company and two of its subsidiaries, Mueller Streamline Co. (Mueller Streamline) and B&K Industries, Inc. (B&K), filed a lawsuit in federal district court in Los Angeles, California against a former supplier, Xiamen Lota International Co., Ltd (Xiamen Lota), its U.S. sales representative (Lota USA), and certain other persons.  The lawsuit alleges that the defendants gave Peter D. Berkman, a former executive of the Company and B&K, an undisclosed interest in Lota USA, and made payments and promises of payment to him, in return for Peter Berkman maintaining the Company as a customer, increasing purchasing levels, and acquiescing to excessive pricing for Xiamen Lota products.  The lawsuit alleges violations of 18 U.S.C. §§ 1962(c) and (d) and state law unfair competition.  The lawsuit seeks compensatory, treble and punitive damages, and other appropriate relief.  All of the foreign defendants have been served under the Hague Convention and Xiamen Lota has withdrawn its motion contesting service of process (filed July 1, 2011).  On January 4, 2012, the foreign defendants filed a motion to dismiss the Company's complaint for failure to state a claim, and also joined in Lota USA's pending motion to dismiss (filed July 1, 2011).  Both motions to dismiss are scheduled to be heard on April 9, 2012.  On December 16, 2011, the Court granted Lota USA's motion to disqualify the Company's counsel and the Company has retained new counsel to represent it going forward in the lawsuit.  The Company believes that a material loss resulting from this litigation is remote.

On August 2, 2011, Xiamen Lota, and Lota Corp. filed suit in federal district court in Memphis, Tennessee against Mueller Industries, Inc. and Mueller Streamline (collectively Mueller).  This matter involves allegations of breach of contract and unjust enrichment arising out of dealing pursuant to which Xiamen Lota supplied Mueller with plumbing products.  The complaint seeks compensatory damages, pre-judgment interest, and other equitable relief.  Mueller intends to vigorously defend this action.  In this regard, Mueller has counterclaimed for breach of contract, breach of warranty and misrepresentation.  The Company believes that a material loss resulting from this litigation is remote.

On September 30, 2011, a lawsuit was filed in federal district court in Chicago, Illinois, against B&K, by  Xiamen Lota, and two of its employees, Yongqiang He (He) and Chuanbao Zhu (Zhu).  The lawsuit alleges that B&K, a subsidiary of the Company, failed to name He as an inventor on three United States patents, U.S. patent nos. 6,880,573 ('573 Patent), 7,140,390 ('390 Patent), and 7,549,444 ('444 Patent) awarded to employees of B&K, and subsequently assigned to B&K.  The '573 Patent, '390 Patent and '444 Patent pertain to frost-free valve assemblies sold by B&K.  The lawsuit also alleges that B&K failed to name Zhu as an inventor on the '390 Patent.  According to the complaint, He and Zhu have assigned any rights they might have in the three patents to Xiamen Lota.  The claims in the lawsuit include correction of inventorship (Counts I - VI), unjust enrichment (Count VII), and tortious interference with prospective economic advantage (Count VIII), and seek unspecified damages from B&K.  The Company has answered Counts I-VI, denying all substantive allegations, and has asserted affirmative defenses.  The Company has moved to dismiss Counts VII and VIII.  The Company's motion to dismiss Counts VII and VIII remains pending.  The Company believes that a material loss resulting from this litigation is remote.

Litigation Settlement

The Company negotiated a settlement with Peter D. Berkman and Jeffrey A. Berkman, former executives of the Company and B&K Industries, Inc. (B&K), a wholly owned subsidiary of the Company, that required the payment of $10.5 million in cash by Peter Berkman, Jeffrey Berkman, and Homewerks Worldwide LLC to the Company.  During 2011, the Company recorded a gain of $10.5 million upon receipt of the settlement proceeds.

Leases

The Company leases certain facilities, vehicles, and equipment under operating leases expiring on various dates through 2024.  The lease payments under these agreements aggregate to approximately $7.8 million in 2012, $6.7 million in 2013, $5.0 million in 2014, $4.5 million in 2015, $3.8 million in 2016, and $6.4 million thereafter.  Total lease expense amounted to $8.8 million in 2011, $8.0 million in 2010, and $8.6 million in 2009.

Consulting Agreement

During 2004, the Company entered into a consulting and non-compete agreement (the Consulting Agreement) with Harvey L. Karp, Chairman of the Board.  The Consulting Agreement provides for post-employment services to be provided by Mr. Karp for a six-year period.  During the first four years of the Consulting Agreement, an annual fee equal to two-thirds of the executive's Final Base Compensation (as defined in the Consulting Agreement) will be payable.  During the final two years, the annual fee is set at one-third of the executive's Final Base Compensation.  During the term of the Consulting Agreement, the executive agrees not to engage in Competitive Activity (as defined in the Consulting Agreement) and will be entitled to receive certain other benefits from the Company.  The maximum amount payable under the Consulting Agreement is $6.7 million.

On November 3, 2011, Mr. Karp notified the Company that he would resign as Chairman of the Company and as a member of the Board of Directors of the Company effective as of December 31, 2011.  Following his resignation, on January 1, 2012, the Consulting Agreement commenced.  Based upon the value of the non-compete provisions of the Consulting Agreement, the Company will expense the value of the Consulting Agreement over its term.

Other

In November 2008, the Company's copper tube facility in Bilston, Great Britain, was damaged by fire and production was curtailed; the losses were covered by property and business interruption insurance.  During 2010, the Company settled the claim with its insurer for total proceeds of $35.3 million, net of the deductible of $0.5 million.  As a result of the settlement with its insurer, all proceeds received and all costs previously deferred (which were recorded as a receivable in prior periods) were recognized, resulting in a pre-tax gain of $21.2 million in 2010.  

In July 2009, there was an explosion at the Company's copper tube facility in Fulton, Mississippi.  Production was curtailed for approximately one week for cleanup and repairs to building structures.  Certain production equipment was also extensively damaged.  In 2010, the Company recorded a gain of $1.5 million related to the property damage claim.  In January 2012, the Company settled the business interruption portion of this claim and received $1.5 million; this gain will be recognized in the first quarter of 2012.

In September 2011, a portion of the Company's Wynne, Arkansas, manufacturing operation was damaged by fire.  There were no reported injuries.  Certain inventories, production equipment, and building structures were extensively damaged requiring further assessment, which is ongoing; rehabilitation alternatives are also being evaluated.  The total value of the loss, including business interruption, cannot be determined at this time, but is expected to be covered by property and business interruption insurance subject to customary deductibles.  As a result of the fire, the Company reclassified to a receivable $2.7 million representing the book value of inventories and $9.6 million representing the net book value of certain production equipment and building structures that were damaged.  The Company also recorded a receivable of $2.5 million for clean-up and other out of pocket costs incurred to date.  Any proceeds received for property damage in excess of the net book value of the related property will be recognized upon settlement of the insurance claim.  The Company has received an advance of $10.0 million from the insurance company for this claim resulting in a net receivable of $4.8 million, classified as accounts receivable on the Consolidated Balance Sheet at December 31, 2011.  In January 2012, the Company received a second advance from the insurance company of $40 million.  The Company has deferred recognition of direct, identifiable costs associated with this matter.  These costs will be recognized upon settlement of the insurance claim.

Additionally, the Company is involved in certain litigation as a result of claims that arose in the ordinary course of business, which management believes will not have a material adverse effect on the Company's financial position, results of operations, or cash flows.  The Company may also realize the benefit of certain legal claims and litigation in the future; these gain contingencies are not recognized in the Consolidated Financial Statements.

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Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2011	Feb. 24, 2012	Jul. 02, 2011
Entity Registrant Name	MUELLER INDUSTRIES INC
Entity Central Index Key	0000089439
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 1,417,562,617
Entity Common Stock, Shares Outstanding		38,247,058
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2011

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Other (Expense) Income, Net

12 Months Ended

Dec. 31, 2011

Other (Expense) Income, Net [Abstract]

Other (Expense) Income, Net

Note 11 – Other Income (Expense), Net

(In thousands)	2011			2010			2009
Interest income	$	711		$	829		$	1,080
Gain on early retirement of debt		-			-			128
Gain (loss) on disposal of properties, net		202			(756	)		(683	)
Environmental expense, non-operating properties		(330	)		(3,467	)		(644	)
Other		1,329			744			991
Other income (expense), net	$	1,912		$	(2,650	)	$	872

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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010
Current assets:
Allowance for doubtful accounts	$ 1,564	$ 5,447
Mueller Industries, Inc. stockholders' equity:
Preferred stock- par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock- shares authorized (in shares)	5,000,000	5,000,000
Common stock- par value (in dollars per share)	$ 0.01	$ 0.01
Common stock- shares authorized (in shares)	100,000,000	100,000,000
Common stock- shares issued (in shares)	40,091,502	40,091,502
Common stock- shares outstanding (in shares)	38,236,568	37,854,760

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Debt

12 Months Ended

Dec. 31, 2011

Debt [Abstract]

Debt

Note 5 – Debt

(In thousands)	2011			2010
6% Subordinated Debentures, due 2014	$	148,176		$	148,176
2001 Series IRB's with interest at 1.23%, due through 2021		9,250			10,000
Mueller-Xingrong line of credit with interest at 6.89%, due 2012		40,265			32,020
Other		50			50
		197,741			190,246
Less current portion of debt		(41,265	)		(32,020	)
Long-term debt	$	156,476		$	158,226

On October 26, 2004, as part of a Special Dividend, the Company issued $299.5 million in principal amount of its 6% Subordinated Debentures (the Debentures) due November 1, 2014.  Interest on the Debentures is payable semi-annually on May 1 and November 1.  The Company may repurchase the Debentures through open market transactions or through privately negotiated transactions.  Since issuance of the Debentures, the Company has repurchased and extinguished $151.3 million in principal amount of the Debentures, of which $0.5 million were repurchased in 2009.  The Debentures may be redeemed in whole at any time or in part from time-to-time at the option of the Company at a price of 100 percent of the principal amount.

On March 7, 2011, the Company executed a Credit Agreement (the Agreement) with a syndicate of banks establishing an unsecured $350 million revolving credit facility (the Credit Facility) which matures March 7, 2016.  Borrowings under the Credit Facility bear interest, at the Company's option, at LIBOR or Base Rate as defined by the Credit Agreement, plus a variable premium.  LIBOR advances may be based upon the one, two, three, or six-month LIBOR.  The variable premium over LIBOR is based on certain financial ratios, and can range from 150 to 200 basis points for LIBOR based loans and 50 to 100 basis points for Base Rate loans.  At December 31, 2011, the premium was 175 basis points for LIBOR loans and 75 basis points for Base Rate loans.  Additionally, a facility fee is payable quarterly on the total commitment and varies from 25 to 37.5 basis points based upon the Company's capitalization ratio.  Availability of funds under the Credit Facility is reduced by the amount of certain outstanding letters of credit, which are used to secure the Company's payment of insurance deductibles and certain retiree health benefits, totaling approximately $11.3 million at December 31, 2011.  Terms of the letters of credit are generally one year but are renewable annually.  There were no borrowings outstanding as of December 31, 2011.

On July 29, 2011, Mueller-Xingrong entered into a credit agreement (the JV Credit Agreement) with a syndicate of four banks establishing a secured RMB 350 million, or approximately $50 million revolving credit facility with a maturity date of July 28, 2012.  The JV Credit Agreement replaced the previous secured RMB 330 million financing agreement that was scheduled to mature on July 16, 2011.  Borrowings under the JV Credit Agreement are secured by the real property and equipment of Mueller-Xingrong and bear interest at 105 percent of the latest base-lending rate published by the People's Bank of China (totaling 6.89 percent at December 31, 2011).

Borrowings under the Agreement and the JV Credit Agreement require, among other things, the satisfaction of certain financial ratios.  The JV Credit Agreement also requires lender consent for the payment of dividends.  At December 31, 2011, the Company was in compliance with all debt covenants.

Aggregate annual maturities of the Company's debt are $41.3 million in 2012, $1.0 million in 2013, $149.2 million in 2014, $1.0 million in 2015, $1.0 million in 2016, and $4.2 million thereafter.  Interest paid in 2011, 2010, and 2009 was $10.8 million, $11.4 million, and $10.1 million, respectively.  No interest was capitalized in 2011, 2010, or 2009.

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Goodwill

12 Months Ended

Dec. 31, 2011

Goodwill [Abstract]

Goodwill

Note 4 – Goodwill

The changes in the carrying amount of goodwill were as follows:

(In thousands)		Plumbing & Refrigeration Segment			OEM Segment			Total
Balance at December 31, 2011, December 25, 2010, and December 26, 2009:
	Goodwill	$	141,684		$	9,971		$	151,655
	Accumulated impairment		(39,434	)		(9,971	)		(49,405	)
Goodwill, net		$	102,250		$	-		$	102,250

Because there are no observable inputs available (Level 3 hierarchy as defined by ASC 820), the Company estimates fair value of reporting units based on a combination of the market approach and income approach.  The market approach measures the fair value of a business through the analysis of publicly traded companies or recent sales of similar businesses.  The income approach uses a discounted cash flow model to estimate the fair value of reporting units based on expected cash flows (adjusted for capital investment required to support operations) and a terminal value.  This cash flow stream is discounted to its present value to arrive at a fair value for each reporting unit.  Future earnings are estimated using the Company's most recent annual projection, applying a growth rate to future periods.  The discount rate selected for the reporting units is generally based on rates of return available from alternative investments of similar type and quality at the date of valuation.

There were no impairment charges resulting from the 2011 or 2010 impairment tests since the estimated fair value substantially exceeded the carrying value.  During 2009, the Company incurred impairment charges of $28.6 million.  In the Plumbing and Refrigeration segment, the Company recognized goodwill impairment charges of $18.6 million at Mueller Primaflow, the Company's import distribution business located in the U.K.  In the OEM segment, the Company recognized goodwill impairment charges of $10.0 million at the following reporting units: (i) Impacts & Micro Gauge, (ii) Gas Products, and (iii) Mueller-Xingrong.  The impairment charges resulted from diminished operating results and cash flows due to weak demand and economic conditions of the markets in which the business units participate.  The Company reviewed the long-lived assets contained within the impaired reporting units, in accordance with the provisions of ASC 360, Property, Plant, and Equipment.  The Company determined that the undiscounted cash flows related to these assets or asset groups were in excess of their carrying value and therefore were not impaired.

The projections used to assist in the determination of the fair value of the reporting units were based on the Company's most recent annual operating plan.  Those projections are directly impacted by the condition of the markets in which the Company's businesses participate.  For the reporting units included in the Plumbing & Refrigeration segment, the projections reflect, among other things, the decline of the residential construction market over the past several years.  The OEM segment is also impacted by the residential construction market.  Additionally, this segment is linked to the automotive industry, which was adversely affected by the economic downturn in 2008 and 2009.

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Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2011

Quarterly Financial Information (Unaudited) [Abstract]

Quarterly Financial Information (Unaudited)

Note 16 – Quarterly Financial Information (Unaudited)

	First			Second		Third		Fourth
(In thousands, except per share data)	Quarter			Quarter		Quarter		Quarter
2011
Net sales	$	687,681		$	652,923	$	585,809	$	491,384
Gross profit (1)		97,807			79,046		61,825		63,442
Consolidated net income		40,542	(2)		22,731		10,741		13,072
Net income attributable to Mueller Industries, Inc.		40,587			22,331		10,475		12,928
Basic earnings per share		1.08			0.59		0.28		0.34
Diluted earnings per share		1.07			0.59		0.27		0.34
Dividends per share		0.10			0.10		0.10		0.10
2010
Net sales	$	485,268		$	540,388	$	507,240	$	526,901
Gross profit (1)		72,220			73,743		69,643		69,380
Consolidated net income		34,799	(3)		16,037		18,747		17,952
Net income attributable to Mueller Industries, Inc.		33,958			15,558		18,909		17,746
Basic earnings per share		0.90			0.41		0.50		0.47
Diluted earnings per share		0.90			0.41		0.50		0.47
Dividends per share		0.10			0.10		0.10		0.10

 (1) Gross profit is net sales less cost of goods sold, which excludes depreciation and amortization.

 (2) First quarter of 2011 includes gain from litigation settlement of $6.8 million after tax.

 (3) First quarter of 2010 includes gain from insurance settlement of $23.3 million after tax.

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Stock-Based Compensation

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation [Abstract]

Stock-Based Compensation

Note 12 – Stock-Based Compensation

In May 2009, the Company's stockholders approved the 2009 Stock Incentive Plan (2009 Plan).  The 2009 Plan authorizes the award of stock-based incentives to employees and non-employee directors.  Awards include restricted stock, stock appreciation rights, and options to purchase stock at specified prices during specified time periods.  The 2009 Plan reserved 750 thousand shares of common stock, which may be issued or transferred upon exercise of stock options.

During the years ended December 31, 2011, December 25, 2010, and December 26, 2009, the Company recognized stock-based compensation, as a component of selling, general, and administrative expense, in its Consolidated Statements of Income of $3.5 million, $2.9 million, and $2.6 million, respectively.  The related tax benefit was $0.9 million in 2011, $0.7 million in 2010, and $0.6 million in 2009.

The fair value of the restricted stock awards equals the fair value of the Company's stock on the grant date and is amortized into compensation expense evenly over the vesting period of each award.  At December 31, 2011 and December 25, 2010, 229 thousand and 132 thousand restricted stock awards were outstanding and unvested, respectively.  During 2011, the Company granted 132 thousand restricted stock awards and 35 thousand restricted stock awards vested.  The aggregate intrinsic value of outstanding and unvested awards was $7.4 million at December 31, 2011.  Total compensation for restricted stock awards not yet recognized was $5.7 million with an average recognition period of four years.

Under existing plans, the Company may grant options to purchase shares of common stock at prices not less than the fair market value of the stock on the date of grant.  Generally, the options vest annually in equal increments over a five-year period beginning one year from the date of grant.  Any unexercised options expire after not more than ten years.  The fair value of each grant is estimated as a single award and amortized into compensation expense on a straight-line basis over its vesting period.  The weighted average grant-date fair value of options granted during 2011, 2010, and 2009 were $12.53, $7.63, and $7.60, respectively.

The Company estimates the fair value of all stock option awards as of the grant date by applying the Black-Scholes-Merton option pricing model.  The use of this valuation model in the determination of compensation expense involves certain assumptions that are judgmental and/or highly sensitive including the expected life of the option, stock price volatility, risk-free interest rate, and dividend yield.  Additionally, forfeitures are estimated at the time of valuation and reduce expense ratably over the vesting period.  The forfeiture rate, which was estimated at 17 percent for 2011, 2010, and 2009, is adjusted periodically based on actual forfeitures.  The weighted average of key assumptions used in determining the fair value of options granted and a discussion of the methodology used to develop each assumption are as follows:

	2011			2010			2009
Expected term	6.3 years			6.3 years			6.3 years
Expected price volatility		0.358			0.353			0.334
Risk-free interest rate		1.7	%		2.4	%		3.3	%
Dividend yield		1.1	%		1.6	%		1.7	%

Expected term – This is the period of time estimated based on historical experience over which the options granted are expected to remain outstanding.  An increase in the expected term will increase compensation expense.

Expected price volatility – This is a measure of the amount by which a price has fluctuated or is expected to fluctuate.  The Company uses actual historical changes in the market value of its stock to calculate the volatility assumption.  Daily market value changes from the date of grant over a past period representative of the expected term of the options are used.  An increase in the expected price volatility rate will increase compensation expense.

Risk-free interest rate – This is the U.S. Treasury rate for the week of the grant, having a term representative of the expected term of the options.  An increase in the risk-free rate will increase compensation expense.

Dividend yield – This rate is the annual dividends per share as a percentage of the Company's stock price.  An increase in the dividend yield will decrease compensation expense.

The Company generally issues treasury shares when options are exercised.  A summary of the stock option activity and related information follows:

(Shares in thousands)	Options			Weighted Average Exercise Price
Outstanding at December 27, 2008		2,084		$	26.43
Granted		226			23.79
Exercised		(477	)		19.16
Cancelled		(80	)		28.42
Expired		(149	)		32.50
Outstanding at December 26, 2009		1,604			27.56
Granted		233			24.70
Exercised		(148	)		19.26
Expired		(24	)		30.78
Outstanding at December 25, 2010		1,665			27.85
Granted		31			37.54
Exercised		(464	)		27.91
Outstanding at December 31, 2011		1,232			28.07

At December 31, 2011, the aggregate intrinsic value of all outstanding options was $13.2 million with a weighted average remaining contractual term of 5.8 years.  Of the outstanding options, 747 thousand are currently exercisable with an aggregate intrinsic value of $7.3 million, a weighted average exercise price of $29.07, and a weighted average remaining contractual term of 4.6 years.  The total intrinsic value of options exercised was $6.6 million, $1.3 million, and $1.4 million in 2011, 2010, and 2009, respectively.  The total compensation expense not yet recognized related to non-vested awards at December 31, 2011 was $8.5 million with an average expense recognition period of 3.4 years.

Approximately 746 thousand shares were available for future stock incentive awards at December 31, 2011.

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Other Current Liabilities

12 Months Ended

Dec. 31, 2011

Other Current Liabilities [Abstract]

Other Current Liabilities

Note 8 – Other Current Liabilities

Included in other current liabilities were accrued discounts and allowances of $40.8 million at December 31, 2011 and $35.8 million at December 25, 2010, and taxes payable of $9.3 million at December 31, 2011 and $8.6 million at December 25, 2010.

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Equity

12 Months Ended

Dec. 31, 2011

Equity [Abstract]

Equity

Note 6 –Equity

The Company's Board of Directors has extended, until October 2012, its authorization to repurchase up to ten million shares of the Company's common stock through open market transactions or through privately negotiated transactions.  The Company has no obligation to purchase any shares and may cancel, suspend, or extend the time period for the purchase of shares at any time.  Any purchases will be funded primarily through existing cash and cash from operations.  The Company may hold any shares purchased in treasury or use a portion of the repurchased shares for its stock-based compensation plans, as well as for other corporate purposes.  From its initial authorization in 1999 through December 31, 2011, the Company had repurchased approximately 2.4 million shares under this authorization.

Components of accumulated other comprehensive loss are as follows:

(In thousands)	2011			2010
Cumulative foreign currency translation adjustment	$	(10,396	)	$	(9,480	)
Unrecognized prior service cost, net of income tax		(13	)		(13	)
Unrecognized actuarial net loss, net of income tax		(38,667	)		(28,289	)
Unrecognized derivative gains, net of income tax		(422	)		566
Unrealized gain on marketable securities, net of income tax		89			170
Accumulated other comprehensive loss	$	(49,409	)	$	(37,046	)

The change in cumulative foreign currency translation adjustment primarily relates to the Company's investment in foreign subsidiaries and fluctuations in exchange rates between their local currencies and the U.S. dollar.  During 2011, the value of the Mexican peso decreased approximately 11.4 percent relative to the U.S. dollar.

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Income Taxes

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Income Taxes

Note 7 – Income Taxes

The components of income (loss) before income taxes were taxed under the following jurisdictions:

(In thousands)	2011		2010		2009
Domestic	$	118,208	$	88,262	$	36,478
Foreign		11,953		33,588		(13,349	)
Income before income taxes	$	130,161	$	121,850	$	23,129

Income tax expense consists of the following:

(In thousands)	2011			2010			2009
Current tax expense:
Federal	$	43,127		$	32,132		$	14,834
Foreign		1,740			6,292			3,248
State and local		2,398			2,518			2,264
Current tax expense		47,265			40,942			20,346
Deferred tax (benefit) expense:
Federal		(6,480	)		(4,057	)		(4,321	)
Foreign		344			(2,036	)		3,893
State and local		1,946			(534	)		(2,126	)
Deferred tax (benefit) expense		(4,190	)		(6,627	)		(2,554	)
Income tax expense	$	43,075		$	34,315		$	17,792

No provision is made for U.S. income taxes applicable to undistributed earnings of foreign subsidiaries that are indefinitely reinvested in foreign operations.  It is not practicable to compute the potential deferred tax liability associated with these undistributed foreign earnings.

The difference between the reported income tax expense and a tax determined by applying the applicable U.S. federal statutory income tax rate to income before income taxes is reconciled as follows:

(In thousands)	2011			2010			2009
Expected income tax expense	$	45,556		$	42,647		$	8,095
State and local income tax, net of federal benefit		4,267			2,867			2,844
Effect of foreign statutory rate different from U.S. and other foreign adjustments		(560	)		(2,143	)		435
Valuation allowance changes		(443	)		(5,496	)		52
U.S. production activities deduction		(3,850	)		(2,975	)		(700	)
Gain on early retirement of debt		-			-			(45	)
Goodwill impairment		-			-			8,728
Tax contingency changes		(1,934	)		(1,516	)		(973	)
Other, net		39			931			(644	)
Income tax expense	$	43,075		$	34,315		$	17,792

During 2011, the Company released a valuation allowance of $0.4 million, or one cent per diluted share, due to the expectation that certain state tax attributes will be utilized.

During 2010, as a result of income from an insurance settlement in a foreign jurisdiction, the Company utilized a deferred tax asset and released a related valuation allowance of $5.5 million, or 15 cents per diluted share.  Additional valuation allowance releases totaled $1.1 million, or 3 cents per diluted share, due to the expectation that certain state tax attributes will be utilized.  The Company also added a valuation allowance of $1.1 million, or 3 cents per diluted share, to offset a foreign deferred tax asset generated during 2010.

During 2009, the Company added valuation allowances of $3.6 million, or 10 cents per diluted share, due to the expectation that certain foreign deferred tax assets will not be realized.  This expense was partially offset by the reduction of a valuation allowance of $2.6 million, or 7 cents per diluted share, due to an increase in the expected future utilization of a state deferred tax asset and the net reduction of a valuation allowance of $0.9 million, or 2 cents per diluted share, related to a federal deferred tax asset.

The following summarizes the activity related to the Company's unrecognized tax benefits:

(In thousands)	2011			2010
Beginning balance	$	8,565		$	11,282
Increases related to prior year tax positions		-			134
Increases related to current year tax positions		-			47
Decreases related to prior year tax positions		(802	)		(612	)
Decreases related to settlements with taxing authorities		-			(392	)
Decreases due to lapses in the statute of limitations		(1,191	)		(1,894	)
Ending balance	$	6,572		$	8,565

Federal income tax benefits associated with state tax uncertainties and interest on federal tax uncertainties are recorded as a deferred tax asset.  As of December 31, 2011, this asset totaled $0.2 million.  Of the $6.6 million total unrecognized tax benefits and $0.2 million of accrued interest, up to $4.0 million could affect the effective tax rate, if recognized.  Due to ongoing federal, state, and foreign income tax audits and potential lapses of the statutes of limitations in various taxing jurisdictions, it is reasonably possible that the Company's unrecognized tax benefits and accrued interest may decrease in the next twelve months up to $3.6 million.

The Company includes interest and penalties related to income tax matters as a component of income tax expense.  Cumulative potential interest and penalties accrued related to unrecognized tax benefits totaled $0.2 million as of December 31, 2011 and $0.7 million as of December 25, 2010, without consideration of any applicable federal benefit.  The net reduction to income tax expense related to penalties and interest was $0.5 million in 2011, $0.2 million in 2010, and $0.7 million in 2009.

The Internal Revenue Service concluded the audit of the Company's 2007 federal income tax return during 2010, the adjustments from which were immaterial.  Audit settlements of the 2004 and 2005 years in Mexico resulted in tax expense of $2.0 million, or 5 cents per diluted share during 2010.  The Company is currently under audit in various state jurisdictions.

The statute of limitations is still open for the Company's federal tax return and most state income tax returns for the 2008 return and all subsequent years.  The statutes of limitations for certain state and foreign returns are also open for some earlier tax years due to ongoing audits and differing statute periods.  While the Company believes that it is adequately reserved for possible audit adjustments, the final resolution of these examinations cannot be determined with certainty and could result in final settlements that differ from current estimates.

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are presented below:

(In thousands)	2011			2010
Deferred tax assets:
Accounts receivable	$	424		$	1,961
Inventories		11,075			7,885
Other postretirement benefits and accrued items		13,880			13,889
Pension		19,262			14,764
Other reserves		14,671			13,516
Federal and foreign tax attributes		7,421			6,651
State tax attributes, net of federal benefit		30,478			32,138
Other		2,296			2,062
Total deferred tax assets		99,507			92,866
Less valuation allowance		(29,705	)		(28,714	)
Deferred tax assets, net of valuation allowance		69,802			64,152
Deferred tax liabilities:
Property, plant, and equipment		44,757			48,330
Foreign withholding tax		-			719
Pension		8,589			8,621
Other		893			1,093
Total deferred tax liabilities		54,239			58,763
Net deferred tax asset	$	15,563		$	5,389

As of December 31, 2011, after consideration of the federal impact, the Company had state income tax credit carryforwards of $0.6 million with various expirations through 2026, and other state income tax credit carryforwards of $15.4 million with unlimited lives.  The Company had state net operating loss (NOL) carryforwards with potential tax benefits of $14.4 million expiring between 2014 and 2026.  The state tax credit and NOL carryforwards are offset by valuation allowances totaling $22.8 million.

As of December 31, 2011, the Company had federal and foreign tax attributes with potential tax benefits of $7.4 million, of which $2.2 million has an unlimited life and $5.2 million expire from 2013 to 2018.  These attributes were offset by valuation allowances of $6.9 million.

Income taxes paid were approximately $45.9 million in 2011, $46.0 million in 2010, and $20.0 million in 2009.

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Employee Benefits

12 Months Ended

Dec. 31, 2011

Pension and Other Postretirement Benefit Expense [Abstract]

Employee Benefits

Note 9 – Employee Benefits

The Company sponsors several qualified and nonqualified pension plans and other postretirement benefit plans for certain of its employees.  The following tables provide a reconciliation of the changes in the plans' benefit obligations and the fair value of the plans' assets for 2011 and 2010, and a statement of the plans' aggregate funded status as of December 31, 2011 and December 25, 2010 as follows:

	Pension Benefits						Other Benefits
(In thousands)	2011			2010			2011			2010
Change in benefit obligation:
Obligation at beginning of year	$	174,464		$	164,644		$	21,083		$	21,381
Service cost		1,394			823			344			275
Interest cost		9,051			9,374			993			1,334
Actuarial loss (gain)		6,077			12,417			(1,369	)		(697	)
Benefit payments		(10,942	)		(10,636	)		(937	)		(1,100	)
Effect of curtailments and settlements		-			-			-			(167	)
Foreign currency translation adjustment		297			(2,158	)		(169	)		57
Obligation at end of year		180,341			174,464			19,945			21,083
Change in fair value of plan assets:
Fair value of plan assets at beginning of year		156,215			147,703			-			-
Actual return on plan assets		(1,306	)		17,585			-			-
Employer contributions		3,094			3,042			937			1,100
Benefit payments		(10,942	)		(10,636	)		(937	)		(1,100	)
Foreign currency translation adjustment		441			(1,479	)		-			-
Fair value of plan assets at end of year		147,502			156,215			-			-
Underfunded status at end of year	$	(32,839	)	$	(18,249	)	$	(19,945	)	$	(21,083	)

The following represents amounts recognized in accumulated OCI (before the effect of income taxes) at December 31, 2011 and December 25, 2010:

	Pension Benefits				Other Benefits
(In thousands)	2011		2010		2011		2010
Unrecognized net actuarial loss	$	58,436	$	41,935	$	118	$	1,455
Unrecognized prior service cost		3		4		17		16

The Company sponsors one pension plan in the U.K. which comprised 36 percent and 35 percent of the above benefit obligation at December 31, 2011 and December 25, 2010, respectively, and 33 percent and 32 percent of the above plan assets at December 31, 2011 and December 25, 2010, respectively.

As of December 31, 2011, $3.7 million of the actuarial net loss will, through amortization, be recognized as components of net periodic benefit cost in 2012.

In aggregate, the underfunded plans are recognized as a liability in the Consolidated Balance Sheets.  The amounts recognized as a liability are classified as current or long-term on a plan-by-plan basis.  Liabilities are classified as current to the extent the actuarial present value of benefits payable within the next 12 months exceed the fair value of plan assets, with all remaining amounts being classified as long-term.  As of December 31, 2011 and December 25, 2010, the total funded status of the plans recognized in the Consolidated Balance Sheets was as follows:

	Pension Benefits						Other Benefits
(In thousands)	2011			2010			2011			2010
Current liability	$	-		$	-		$	(1,333	)		(1,362	)
Long-term liability		(32,839	)		(18,249	)		(18,612	)		(19,721	)
Total underfunded status	$	(32,839	)	$	(18,249	)	$	(19,945	)	$	(21,083	)

The components of net periodic benefit cost are as follows:

(In thousands)	2011			2010			2009
Pension benefits:
Service cost	$	1,394		$	823		$	865
Interest cost		9,051			9,374			8,907
Expected return on plan assets		(11,569	)		(11,443	)		(10,732	)
Amortization of prior service cost		2			294			305
Amortization of net loss		2,346			2,307			833
Net periodic benefit cost	$	1,224		$	1,355		$	178
Other benefits:
Service cost	$	344		$	273		$	235
Interest cost		993			1,333			1,824
Amortization of prior service (credit) cost		(3	)		1			2
Amortization of net (gain) loss		(2	)		156			156
Effect of curtailments and settlements		-			25			28
Net periodic benefit cost	$	1,332		$	1,788		$	2,245

During 2009, the Company executed a Deed of Amendment (the Amendment) which froze the accrual of future benefits related to its U.K. pension plan.  Pursuant to U.K. law, past service accruals are adjusted for the effects of inflation after the execution of the Amendment.  The Amendment did not have a material impact on the Company's results of operations.

Prior service costs are amortized on a straight-line basis over the average remaining service period of active participants.  Gains and losses in excess of 10 percent of the greater of the benefit obligation and the market-related value of assets are amortized over the average remaining service period of active participants.

The weighted average assumptions used in the measurement of the Company's benefit obligations are as follows:

	Pension Benefits				Other Benefits
	2011		2010		2011		2010
Discount rate		4.80%		5.25%		4.97%		5.39%
Expected long-term return on plan assets		7.11%		7.51%		N/A		N/A
Rate of compensation increases		N/A		N/A		5.04%		5.04%
Rate of inflation		3.00%		3.40%		N/A		N/A

The weighted average assumptions used in the measurement of the Company's net periodic benefit cost are as follows:

	Pension Benefits									Other Benefits
	2011			2010			2009			2011			2010			2009
Discount rate		5.25	%		5.77	%		6.44	%		5.39	%		6.08	%		6.24	%
Expected long-term return on plan assets		7.51	%		8.04	%		8.12	%		N/A			N/A			N/A
Rate of compensation increases		3.40	%		3.75	%		2.75	%		5.04	%		5.04	%		5.04	%

The Company's Mexican postretirement plans and the U.K. pension plan (prior to the execution of the Amendment) use the rate of compensation increase in the benefit formulas.  After execution of the Amendment, past service on the U.K. pension plan will be adjusted for the effects of inflation.  All other pension plans use benefit formulas based on length of service.

The annual assumed rate of increase in the per capita cost of covered benefits (i.e., health care cost trend rate) is assumed to range from 6.55 to 10.00 percent for 2012, gradually decrease to 5.00 percent for 2021, and remain at that level thereafter.  The health care cost trend rate assumption could have a significant effect on the amounts reported.  For example, increasing the assumed health care cost trend rates by one percentage point would increase the accumulated postretirement benefit obligation by $1.9 million and the service and interest cost components of net periodic postretirement benefit costs by $0.1 million for 2012.  Decreasing the assumed health care cost trend rates by one percentage point in each year would decrease the accumulated postretirement benefit obligation and the service and interest cost components of net periodic postretirement benefit costs for 2012 by $1.6 million and $0.1 million, respectively.

The weighted average asset allocation of the Company's pension fund assets are as follows:

	Pension Plan Assets
Asset category	2011			2010
Equity securities (includes equity mutual funds)		80	%		73	%
Fixed income securities (includes fixed income mutual funds)		5			4
Cash and equivalents (includes money market funds)		8			16
Alternative investments		7			7
Total		100	%		100	%

At December 31, 2011, the Company's target allocation, by asset category, of assets of its defined benefit pension plans was: (i) equity securities, including equity index funds – at least 60 percent; (ii) fixed income securities – not more than 25 percent; and (iii) alternative investments – not more than 20 percent.

The Company's pension plan obligations are long-term and, accordingly, the plan assets are invested for the long-term.  The Company believes that a diversified portfolio of equity securities (both actively managed and index funds) and private equity funds have an acceptable risk-return profile that, over the long-term, is better than fixed income securities.  Consequently, the pension plan assets are heavily weighted to equity investments.  Plan assets are monitored periodically.  Based upon results, investment managers and/or asset classes are redeployed when considered necessary.  Expected rates of return on plan assets were determined based on historical market returns giving consideration to the targeted composition of each plan's portfolio.  None of the plans' assets are expected to be returned to the Company during the next fiscal year.

The Company's investments for its pension plans are reported at fair value.  The following methods and assumptions were used to estimate the fair value of the Company's plan asset investments:

Cash and money market funds – Valued at cost, which approximates fair value.

Common stock – Valued at the closing price reported on the active market on which theindividual securities are traded.

Mutual funds – Valued at the net asset value of shares held by the plans at December 31, 2011, based upon quoted market prices.

Limited partnerships – Limited partnerships include investments in various Cayman Island multi-strategy hedge funds.  The plans' investments in limited partnerships are valued at the estimated fair value of the class shares owned by the plans based upon the equity in the estimated fair value of those shares.  The estimated fair values of the limited partnerships are determined by the investment managers.  In determining fair value, the investment managers of the limited partnerships utilize theestimated net asset valuations of the underlying investment entities.  The underlyinginvestment entities value securities and other financial instruments on a mark-to-market or estimated fair value basis.  The estimated fair value is determined by the investmentmanagers based upon, among other things, the type of investments, purchase price, marketability, current financial condition, operating results, and other information.  The estimated fair values of substantially all of the investments of the underlying investment entities, which may include securities for which prices are not readily available, aredetermined by the investment managers or management of the respective underlying investment entities and may not reflect amounts that could be realized upon immediate sale.  Accordingly, the estimated fair values may differ significantly from the values that would have been used had a ready market existed for these investments.

The following table sets forth by level, within the fair value hierarchy, the assets of the plans at fair value as of December 31, 2011:

(In thousands)	Fair Value Measurements at December 31, 2011
	Level 1		Level 2		Level 3		Total
Cash and money market funds	$	11,707	$	-	$	-	$	11,707
Common stock (a)		58,498		-		-		58,498
Mutual funds (b)		19,054		47,098		-		66,152
Limited partnerships		-		-		11,145		11,145
Total	$	89,259	$	47,098	$	11,145	$	147,502

(a)	Approximately 88 percent of common stock represents investments in U.S. companies primarily in the health care, utilities, financials, consumer staples, industrials, information technology, and telecommunications sectors.  All investments in common stock are listed on U.S. stock exchanges.
(b)	Approximately 30 percent of mutual funds are actively managed funds and approximately 70 percent of mutual funds are index funds.  Additionally, 32 percent of the mutual funds' assets are invested in U.S. equities, 57 percent in non-U.S. equities, and 11 percent in non-U.S. fixed income securities.

The table below reflects the changes in the assets of the plan measured at fair value on a recurring basis using significant unobservable inputs (Level 3 hierarchy as defined by ASC 820) during the year ended December 31, 2011:

(In thousands)	Limited Partnerships
Balance, December 25, 2010	$	11,590
Purchases		1,068
Redemptions		(1,668	)
Net appreciation in fair value		155
Balance, December 31, 2011	$	11,145

Redemption of the plans' investments in limited partnerships requires advance written notice.  One of the funds can be redeemed quarterly with 60 days' notice, and the other fund can be redeemed monthly with 30 days' notice.  There are no other restrictions on the redemption of the investments.

The assets of the plans do not include investments in securities issued by the Company.  The Company expects to contribute approximately $1.5 million to its pension plans and $1.3 million to its other postretirement benefit plans in 2012.  The Company expects future benefits to be paid from the plans as follows:

(In thousands)	Pension Benefits		Other Benefits
2012	$	10,311	$	1,333
2013		10,384		1,350
2014		10,513		1,370
2015		10,657		1,433
2016		10,783		1,386
2017-2021		53,809		7,328
Total	$	106,457	$	14,200

The Company contributes to the I.A.M. National Pension Fund, National Pension Plan (I.A.M. Plan), a multiemployer defined benefit plan.  Participation in the I.A.M. Plan was negotiated under the terms of two collective bargaining agreements in Port Huron, Michigan, the Local 218 I.A.M. and Local 44 U.A.W that expire on May 1, 2013 and July 20, 2013, respectively.  The Employer Identification Number for this plan is 51-6031295.

The risks of participating in multiemployer plans are different from single-employer plans in the following aspects:  (i) Assets contributed to the multiemployer plan by one employer may be used to provide benefits to employees of other participating employers, (ii) if a participating employer stops contributing to the plan, the underfunded obligations of the plan may be borne by the remaining participating employers, (iii) if the Company chooses to stop participating in the plan, the Company may be required to pay the plan an amount based on the underfunded status of the plan, referred to as a withdrawal liability.

The Company makes contributions to the I.A.M. Plan trusts that cover certain union employees; contributions by employees are not required nor are they permitted.  Contributions to the I.A.M. Plan were $0.9 million in 2011, $0.7 million in 2010, and $1.4 million in 2009.  The Company's contributions are less than five percent of total employer contributions made to the I.A.M. Plan indicated in the most recently filed Form 5500.

Under the Pension Protection Act of 2006, the I.A.M. Plan's actuary must certify the plan's zone status annually.  Plans in the red zone are generally less than 65 percent funded, plans in the yellow zone are less than 80 percent funded, and plans in the green zone are at least 80 percent funded.  If a plan is determined to be in endangered status, red zone or yellow zone, the plan's trustees must develop a formal plan of corrective action, a Financial Improvement Plan and/or a Rehabilitation Plan.  For 2011 and 2010 the I.A.M Plan was determined to have green zone status; therefore, no formal plan of corrective action is either pending or has been implemented.

The Company sponsors voluntary employee savings plans that qualify under Section 401(k) of the Internal Revenue Code of 1986.  Compensation expense for the Company's matching contribution to the 401(k) plans was $3.0 million in 2011, $2.5 million in 2010, and $2.4 million in 2009.  The Company's match is a cash contribution.  Participants direct the investment of their account balances by allocating among a range of asset classes including mutual funds (equity, fixed income, and balanced funds), and money market funds.  The plans do not allow direct investment in securities issued by the Company.

In October 1992, the Coal Industry Retiree Health Benefit Act of 1992 (the Act) was enacted.  The Act mandates a method of providing for postretirement benefits to the United Mine Workers of America (UMWA) current and retired employees, including some retirees who were never employed by the Company.  In October 1993, beneficiaries were assigned to the Company and the Company began its mandated contributions to the UMWA Combined Benefit Fund, a multiemployer trust.  Beginning in 1994, the Company was required to make contributions for assigned beneficiaries under an additional multiemployer trust created by the Act, the UMWA 1992 Benefit Plan.  The ultimate amount of the Company's liability under the Act will vary due to factors which include, among other things, the validity, interpretation, and regulation of the Act, its joint and several obligation, the number of valid beneficiaries assigned, and the extent to which funding for this obligation will be satisfied by transfers of excess assets from the 1950 UMWA pension plan and transfers from the Abandoned Mine Reclamation Fund.  Contributions to the plan were $338 thousand, $478 thousand, and $475 thousand for the years ended December 31, 2011, December 25, 2010, and December 26, 2009, respectively.

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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation [Abstract]

Weighted average assumptions used in calculating fair value of stock options

The weighted average of key assumptions used in determining the fair value of options granted and a discussion of the methodology used to develop each assumption are as follows:

	2011			2010			2009
Expected term	6.3 years			6.3 years			6.3 years
Expected price volatility		0.358			0.353			0.334
Risk-free interest rate		1.7	%		2.4	%		3.3	%
Dividend yield		1.1	%		1.6	%		1.7	%

Summary of the stock option activity

The Company generally issues treasury shares when options are exercised.  A summary of the stock option activity and related information follows:

(Shares in thousands)	Options			Weighted Average Exercise Price
Outstanding at December 27, 2008		2,084		$	26.43
Granted		226			23.79
Exercised		(477	)		19.16
Cancelled		(80	)		28.42
Expired		(149	)		32.50
Outstanding at December 26, 2009		1,604			27.56
Granted		233			24.70
Exercised		(148	)		19.26
Expired		(24	)		30.78
Outstanding at December 25, 2010		1,665			27.85
Granted		31			37.54
Exercised		(464	)		27.91
Outstanding at December 31, 2011		1,232			28.07

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Derivative Instruments and Hedging Activities Part 2 (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Accumulated OCI (Effective Portion), Net of Tax - noncontrolling portion	$ 675,000
Open futures contracts to purchase commodities on related fixed price sales order	21,100,000
Fair value of futures contracts loss position	679,000
Recorded restricted cash related to open future contracts	1,900,000
Commodity contracts [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Accumulated OCI (Effective Portion), Net of Tax	(427,000)	1,684,000
Commodity contracts [Member] | Cash Flow Hedging [Member] | Cost of goods sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Gain) Loss Reclassified from Accumulated OCI into Income (Effective Portion), Net of Tax	(561,000)	(1,308,000)
Commodity contracts [Member] | Fair Value Hedging [Member] | Cost of goods sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on the derivatives in designated and qualifying fair value hedges	4,509,000
Inventory [Member] | Fair Value Hedging [Member] | Cost of goods sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on the derivatives in designated and qualifying fair value hedges	$ (4,344,000)

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Acquisitions

12 Months Ended

Dec. 31, 2011

Acquisitions [Abstract]

Acquisitions

Note 14 – Acquisitions

On December 28, 2010, the Company purchased certain assets of Tube Forming, L.P. (TFI).  TFI primarily serves the HVAC market in North America.  The acquired assets include inventories, production equipment as well as factory leaseholds.  TFI has operations in Carrollton, Texas, and Guadalupe, Mexico, where it produces precision copper return bends and crossovers, and custom-made tube components and brazed assemblies, including manifolds and headers.  TFI's estimated net sales for 2010 were approximately $35 million.  Mueller paid approximately $6.9 million for the assets subject to certain adjustments, which was funded with existing cash on hand.  The acquisition of TFI extends the Company's product offering within the OEM segment.

On August 6, 2010, the Company purchased certain assets of Linesets, Inc., a manufacturer of assembled line sets with operations in Phoenix, Arizona and Atlanta, Georgia.  This acquisition expands the Company's current line sets business, a part of the Plumbing & Refrigeration segment.  The purchase price of approximately $2.1 million was allocated primarily to inventory and heavy machinery and equipment.

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Inventories (Tables)

12 Months Ended

Dec. 31, 2011

Inventories [Abstract]

Inventories Table

(In thousands)	2011			2010
Raw materials and supplies	$	42,281		$	47,737
Work-in-process		38,420			34,784
Finished goods		143,648			131,921
Valuation reserves		(5,156	)		(4,550	)
Inventories	$	219,193		$	209,892

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Stock-Based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for the stock incentive plan (in shares)	746,000		750,000
Stock-based compensation expense	$ 3.5	$ 2.9	$ 2.6
Related tax benefit to stock based compensation	0.9	0.7	0.6
Weighted average exercise price [Roll Forward]
Stock option compensation not yet recognized	0
Average stock option expense recognition period	0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards outstanding (in shares)	229,000	132,000
Granted (in shares)	132,000
Vested (in shares)	35,000
Aggregate intrinsic value	7.4
Compensation for stock awards not yet recognized	5.7
Compensation recognition period (in years)	4
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation for stock awards not yet recognized	8.5
Compensation recognition period (in years)	3.4
Stock options vesting period (in years)	5Y
Number of years vesting starts after the grant date (in years)	1Y
Stock options expirations (in years)	10
Weighted average grant-date fair value of options granted (in dollars per share)	$ 12.53	$ 7.63	$ 7.60
Estimated forfeiture rate (in hundredths)	17.00%	17.00%	17.00%
Weighted average key assumptions [Abstract]
Expected term (in years)	6.3	6.3	6.3
Expected price volatility	35.80%	35.30%	33.40%
Risk-free interest rate (in hundredths)	1.70%	2.40%	3.30%
Dividend yield (in hundredths)	1.10%	1.60%	1.70%
Options outstanding [Roll Forward]
Beginning balance (in shares)	1,665	1,604	2,084
Granted (in shares)	31	233	226
Exercised (in shares)	(464)	(148)	(477)
Cancelled (in shares)			(80)
Expired (in shares)		(24)	(149)
Ending balance (in shares)	1,232	1,665	1,604
Weighted average exercise price [Roll Forward]
Beginning balance (in dollars per share)	$ 27.85	$ 27.56	$ 26.43
Granted (in dollars per share)	$ 37.54	$ 24.70	$ 23.79
Exercised (in dollars per share)	$ 27.91	$ 19.26	$ 19.16
Cancelled (in dollars per share)			$ 28.42
Expired (in dollars per share)		$ 30.78	$ 32.50
Ending balance (in dollars per share)	$ 28.07	$ 27.85	$ 27.56
Aggregate intrinsic value of all outstanding options	13.2
Weighted average remaining contractual term of all outstanding options (in years)	5.8
Outstanding options, exercisable (in shares)	747,000
Aggregate intrinsic value of current exercisable shares	7.3
Weighted average exercise price (in dollars per share)	$ 29.07
Weighted average remaining contractual term (in years)	4.6
Total intrinsic value of options exercised	$ 6.6	$ 1.3	$ 1.4

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Goodwill (Details) (USD $)	12 Months Ended
	Dec. 26, 2009	Dec. 31, 2011	Dec. 25, 2010
Goodwill [Line Items]
Goodwill, beginning balance	$ 151,655,000	$ 151,655,000	$ 151,655,000
Accumulated impairment, beginning balance	(49,405,000)	(49,405,000)	(49,405,000)
Goodwill, net	102,250,000	102,250,000	102,250,000
Impairment charge	28,600,000
Plumbing and Refrigeration Segment [Member]
Goodwill [Line Items]
Goodwill, beginning balance	141,684,000	141,684,000	141,684,000
Accumulated impairment, beginning balance	(39,434,000)	(39,434,000)	(39,434,000)
Goodwill, net	102,250,000	102,250,000	102,250,000
Impairment charge	18,600,000
OEM Segment [Member]
Goodwill [Line Items]
Goodwill, beginning balance	9,971,000	9,971,000	9,971,000
Accumulated impairment, beginning balance	(9,971,000)	(9,971,000)	(9,971,000)
Goodwill, net	0	0	0
Impairment charge	$ 10,000,000

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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Operating activities:
Consolidated net income	$ 87,086	$ 87,535	$ 5,337
Reconciliation of net income to net cash provided by operating activities:
Depreciation	35,966	39,656	40,867
Amortization of intangibles	899	708	701
Amortization of financing costs	397	288	190
Stock-based compensation expense	3,482	2,877	2,633
Insurance settlements	0	(22,736)	0
Insurance proceeds - noncapital related	10,000	5,561	7,338
Income tax benefit from exercise of stock options	(853)	(145)	(203)
Impairment charges	0	0	29,755
Deferred income taxes	(4,190)	(6,627)	(2,554)
Doubtful accounts receivable	(229)	4,763	506
Gain on early retirement of debt	0	0	(128)
(Gain) loss on disposal of properties	(202)	756	683
Changes in assets and liabilities, net of businesses acquired:
Receivables	28,716	(46,494)	(6,988)
Inventories	(15,678)	(17,248)	22,699
Other assets	460	2,974	(505)
Current liabilities	7,966	4,913	(21,161)
Other liabilities	(1,593)	(623)	(1,808)
Other, net	1,522	199	26
Net cash provided by operating activities	153,749	56,357	77,388
Investing activities:
Capital expenditures	(18,751)	(18,678)	(13,942)
Acquisition of businesses	(6,882)	(2,021)	0
Proceeds from sales of properties	1,984	71	611
Net (deposits into) withdrawals from restricted cash balances	(3,055)	(156)	7,013
Insurance proceeds	0	18,798	0
Net cash used in investing activities	(26,704)	(1,986)	(6,318)
Financing activities:
Repayments of long-term debt	(750)	0	(370)
Dividends paid to stockholders of Mueller Industries, Inc.	(15,146)	(15,074)	(14,944)
Dividends paid to noncontrolling interests	0	(741)	(1,449)
Issuance of debt by joint venture, net	6,162	6,848	131
Net proceeds from the exercise of stock options	3,880	2,428	8,275
Income tax benefit from exercise of stock options	853	145	203
Debt issuance costs	(1,943)	0	0
Net cash used in financing activities	(6,944)	(6,394)	(8,154)
Effect of exchange rate changes on cash	(78)	161	4,225
Increase in cash and cash equivalents	120,023	48,138	67,141
Cash and cash equivalents at the beginning of the year	394,139	346,001	278,860
Cash and cash equivalents at the end of the year	$ 514,162	$ 394,139	$ 346,001

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Property, Plant, and Equipment, Net

12 Months Ended

Dec. 31, 2011

Property, Plant, and Equipment, Net [Abstract]

Property, Plant, and Equipment, Net

Note 3 – Property, Plant, and Equipment, Net

(In thousands)	2011			2010
Land and land improvements	$	10,932		$	12,150
Buildings		110,456			115,919
Machinery and equipment		541,793			558,775
Construction in progress		10,137			4,445
		673,318			691,289
Less accumulated depreciation		(469,574	)		(461,791	)
Property, plant, and equipment, net	$	203,744		$	229,498

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Property, Plant, and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2011

Property, Plant, and Equipment, Net [Abstract]

Property, Plant, and Equipment, Net

(In thousands)	2011			2010
Land and land improvements	$	10,932		$	12,150
Buildings		110,456			115,919
Machinery and equipment		541,793			558,775
Construction in progress		10,137			4,445
		673,318			691,289
Less accumulated depreciation		(469,574	)		(461,791	)
Property, plant, and equipment, net	$	203,744		$	229,498

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Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Principles of consolidation [Abstract]
Non-controlling ownership interest of Mueller-Xingrong (in hundredths)	49.50%
Cash equivalents [Abstract]
Temporary investments	$ 322.1	$ 315.9
Restricted cash	13.0	9.2
Fair value of financial instruments [Abstract]
Fair value of the Company's debt instruments	197.0	189.9
Foreign currency translation [Abstract]
Foreign currency transaction losses	$ 0.7	$ 2.2	$ 0.2
Stock Options [Member]
Earnings per share [Abstract]
Stock options were excluded from the computation of diluted earnings per share (in shares)		1.3	1.2
Buildings [Member]
Property, Plant and Equipment [Abstract]
Property, Plant and equipment estimated useful lives, minimum (in years)	20
Property, Plant and equipment estimated useful lives, maximum (in years)	40
Machinery and Equipment [Member]
Property, Plant and Equipment [Abstract]
Property, Plant and equipment estimated useful lives, minimum (in years)	5
Property, Plant and equipment estimated useful lives, maximum (in years)	20

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Derivative Instruments and Hedging Activities

12 Months Ended

Dec. 31, 2011

Derivative Instruments and Hedging Activities [Abstract]

Derivative Instruments and Hedging Activities

Note 13 – Derivative Instruments and Hedging Activities

Cash Flow Hedges

Copper and brass represent the largest component of the Company's variable costs of production.  The cost of these materials is subject to global market fluctuations caused by factors beyond the Company's control.  The Company occasionally enters into forward fixed-price arrangements with certain customers; the risk of these arrangements is generally managed with commodity futures contracts.  The Company accounts for these futures contracts in accordance with ASC 815, Derivatives and Hedging (ASC 815).  These futures contracts have been designated as cash flow hedges.  The fair value of open futures contracts are recognized as a component of OCI until the position is closed which corresponds to the period when the related hedged transaction is recognized in earnings.  Should these contracts no longer meet hedge criteria in accordance with ASC 815, either through lack of effectiveness or because the hedged transaction is no longer probable of occurring, all deferred gains and losses related to the hedge would be immediately reclassified from OCI into earnings as a component of other income.  In the next nine months, the Company will reclassify into earnings realized gains or losses of cash flow hedges; at December 31, 2011, the net value included in OCI was approximately a $675 thousand loss.

At December 31, 2011, the Company held open futures contracts to purchase approximately $21.1 million of copper over the next nine months related to fixed price sales orders.  The fair value of those futures contracts was a $679 thousand loss position, which was determined by obtaining quoted market prices (Level 1 hierarchy as defined by ASC 820).  

Derivative instruments designated as cash flow hedges under ASC 815 are reflected in the Consolidated Financial Statements as follows:

	December 31, 2011
(In thousands)	Location		Fair value
Commodity contracts	Other current assets:	Gain positions	$	85
		Loss positions		(25	)
	Other current liabilities:	Gain positions		339
		Loss positions		(1,078	)

	December 25, 2010
(In thousands)	Location		Fair value
Commodity contracts	Other current assets:	Gain positions	$	891

The following tables summarize activities related to the Company's derivative instruments, classified as cash flow hedges in accordance with ASC 815:

	Gain (Loss) Recognized in Accumulated OCI (Effective Portion), Net of Tax
			For the Year Ended
(In thousands)			December 31, 2011				December 25, 2010
Commodity contracts		$		(427	)	$		1,684

	(Gain) Loss Reclassified from Accumulated OCI into Income (Effective Portion), Net of Tax
		For the Year Ended
(In thousands)	Location	December 31, 2011			December 25, 2010
Commodity contracts	Cost of goods sold	$	(561	)	$	(1,308	)

The Company enters into futures contracts that closely match the terms of the underlying transactions.  As a result, the ineffective portion of the hedge contracts is not material to the Consolidated Statements of Income.  

Fair Value Hedges

The Company occasionally enters into futures contracts in order to protect the value of inventory against market fluctuations.  The Company accounts for these futures contracts in accordance with ASC 815.  These futures contracts have been designated as fair value hedges.  For fair value hedges, the changes in value of the hedging derivative, as well as the changes in value of the related hedged item due to the risk being hedged, are reflected in current earnings.  Hedge ineffectiveness is reflected in current earnings in the period in which it occurs.  At December 31, 2011, the Company held no open contracts designated as fair value hedges.

The following tables summarize the gains (losses) on the Company's fair value hedges:

	Gains (Losses) on Fair Value Hedges for the Year Ended December 31, 2011
	Location	Amount
(In thousands)
Gain on the derivatives in designated and qualifying fair value hedges:
Commodity Contracts	Cost of goods sold	$	4,509
(Loss) on the hedged item in designated and qualifying fair value hedges:
Inventory	Cost of goods sold	$	(4,344	)

The Company enters into futures contracts that closely match the terms of the underlying transactions.  As a result, the ineffective portion of the open cash flow and fair value hedge contracts through December 31, 2011, was not material to the Condensed Consolidated Statements of Income.

The Company does not offset fair value of amounts for derivative instruments and fair value amounts recognized for the right to reclaim cash collateral.  At December 31, 2011, the Company had recorded restricted cash of $1.9 million related to open futures contracts.