-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, Fk+aHJMqb0llJhhDmBvuBqFdisjQJOjml3CXZAe6SmEabPrbqlzMJzhUgpdrbZ3b IBwbdKFm8qnYulaX7SZOLQ== 0001047469-03-000504.txt : 20030107 0001047469-03-000504.hdr.sgml : 20030107 20030107140130 ACCESSION NUMBER: 0001047469-03-000504 CONFORMED SUBMISSION TYPE: 425 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20030107 GROUP MEMBERS: CF&I STEEL, L.P. GROUP MEMBERS: CF&I, INC. SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: OREGON STEEL MILLS INC CENTRAL INDEX KEY: 0000830260 STANDARD INDUSTRIAL CLASSIFICATION: STEEL WORKS, BLAST FURNACES ROLLING MILLS (COKE OVENS) [3312] IRS NUMBER: 940506370 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 425 SEC ACT: 1934 Act SEC FILE NUMBER: 001-09887 FILM NUMBER: 03506287 BUSINESS ADDRESS: STREET 1: 1000 SW BROADWAY STREET 2: STE 2200 CITY: PORTLAND STATE: OR ZIP: 97205 BUSINESS PHONE: 5032405788 MAIL ADDRESS: STREET 1: PO BOX 5368 CITY: PORTLAND STATE: OR ZIP: 97228 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: OREGON STEEL MILLS INC CENTRAL INDEX KEY: 0000830260 STANDARD INDUSTRIAL CLASSIFICATION: STEEL WORKS, BLAST FURNACES ROLLING MILLS (COKE OVENS) [3312] IRS NUMBER: 940506370 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 425 BUSINESS ADDRESS: STREET 1: 1000 SW BROADWAY STREET 2: STE 2200 CITY: PORTLAND STATE: OR ZIP: 97205 BUSINESS PHONE: 5032405788 MAIL ADDRESS: STREET 1: PO BOX 5368 CITY: PORTLAND STATE: OR ZIP: 97228 425 1 a2100217z425.htm 425

Filing Companies: Oregon Steel Mills, Inc.
New CF&I, Inc.
CF&I Steel, L.P.

Subject Company: Oregon Steel Mills, Inc.

This communication is filed pursuant to
Rule 425 under the Securities Act of 1933 and
Rule 13e-4(c)(4) under the Securities Act of 1934.

Form S-4 Registration Statement
Commission File No.: 333-98249

Oregon Steel Mills, Inc. Extends $305 Million Exchange Offer
of First Mortgage Notes

Portland, Oregon (January 6, 2003)—Oregon Steel Mills, Inc. (NYSE: OS) today announced that it has extended the expiration date for its exchange offer of its 10% first mortgage notes due 2009 from January 6, 2003 until 5 p.m., New York time, on January 9, 2003. The notes bear interest at 10% and mature on July 15, 2009.

As of January 6, 2003, $304,900,000 in aggregate principal amount of the notes had been tendered and not withdrawn.

The prospectus relating to this exchange offer contains important information and investors are urged to read it. The prospectus is available at no charge over the Internet at http://www.sec.gov. It is also available at no charge upon request from Oregon Steel Mills, Inc., 1000 SW Broadway, Suite 2200, Portland, Oregon 97205, Attention: Vice President, Corporate Affairs (telephone number (503) 240-5787).

Oregon Steel Mills, Inc. is organized into two divisions. The Oregon Steel Division produces steel plate, coil and welded pipe from plants located in Portland, Oregon, Napa, California and Camrose, Alberta, Canada. The Rocky Mountain Steel Mills Division, located in Pueblo, Colorado, produces steel rail, rod, bar, and tubular products.

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