Property, Plant and Equipment

12 Months Ended

Dec. 31, 2012

Note 4: Property, Plant and Equipment

Property, plant and equipment are presented at cost net of accumulated depreciation and consist of the following:

December 31,	2012			2011
(in thousands)
Land	$	17,420		$	17,403
Buildings and leasehold improvements		111,986			94,152
Operating equipment		1,155,600			990,186
Computer software		20,581			18,662
Furniture and fixtures		7,232			5,679
Vehicles		357,913			306,716
Construction in progress		9,829			9,828
Gross property, plant and equipment		1,680,561			1,442,626
Less: accumulated depreciation		(924,235	)		(767,266	)
Net property, plant and equipment	$	756,326		$	675,360

Depreciation expense was $214.9 million in 2012, $179.9 million in 2011 and $133.4 million in 2010. There were no capital leases outstanding as of December 31, 2012 and December 31, 2011. The Company had accounts payable for purchases of property and equipment of approximately $24.4 million as of December 31 2012, $32.7 million as of December 31, 2011 and $18.1 million as of December 31, 2010.

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

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