Oregon Steel Mills (OSM), a subsidiary of Orion Steel Companies, is an American steelmaker owned by Atlas Holdings. The company was founded in 1926 in Portland, Oregon, United States. The company produces plate and coil products, including ballistic grade steel armor.
History Oregon Steel began as Gilmore Steel in 1926 when William G. Gilmore started the company.
Thomas Boklund became president of Gilmore Steel in 1982, CEO in 1985, and chairman of the board in 1992.Jim Springhetti, Oregon Steel Mills' Boklund dies at 69, OregonLive.com, December 31, 2008 In 1987, the company became Oregon Steel Mills (OSM). It went public in 1988 (trading on the NYSE as OS), launching a series of acquisitions. In 1993, OSM purchased Colorado Fuel and Iron.Oregon Steel Mills Inc. reports earnings for Qtr to March 31. The New York Times, May 1, 1993.
In January 2007, the company was acquired by Evraz, a Russian steel producer, for $2.3 billion.Campoy, Ana. Evraz: US committee OKs Oregon Steel Mills acquisition. MarketWatch. Retrieved on March 28, 2007. In February 2010, Jim Declusin stepped down as CEO of Evraz Oregon Steel Mills after 4 years in office.Jim Declusin steps down as Oregon Steel Mills CEO, Oregonlive.com, February 6, 2010 In January 2011, the company announced moving its headquarters from Portland to Chicago.Richard Read, Evraz North America moving headquarters from Portland to Chicago, Oregonlive.com, January 20, 2011
In April 2020, Evraz Oregon Steel Mills stopped operating its Portland spiral pipe mill, leading to 230 permanent job cuts, following a downturn in the gas and oil industry amid the COVID-19 pandemic.Pete Danko, Evraz Oregon Steel Mills cutting 230 jobs in Portland, Bizjournals.com, April 6, 2020 65 more workers were laid off in June 2020 at its North Portland mill.Evraz will lay off another 65 at Portland steel mill amid ‘significant business downturn’, Oregonlive.com, June 10, 2020 This pipe mill had closed in 2009 and reopened in 2012 following the nation's boost in natural gas and oil drilling production.Evraz Portland will fire up Oregon Steel mill closed in 2009, hiring 200, Oregonlive.com, October 17, 2012 The facilities in Oregon were using steel slabs imported from Russia, but importing steel from Russia became much more expensive due to tariffs imposed during the Trump administration.Polina Ivanova, Russian steelmaker Evraz weighs up new U.S. rail mill, capex soars, Reuters.com, October 19, 2018
Evraz was the largest carbon emitter of the city of Portland .
As a result of sanctions placed against it as a result of the 2022 Russian invasion of Ukraine, Evraz announced its intention to sell its North American assets.
On July 31, 2025, Atlas Holdings acquired the North American operations and reorganized them under a new company called Orion Steel.
Operations
The company operates a variety of steel production facilities. These include a plate mill at their OSM Rolling Mill at the Portland Steelworks in Portland, Oregon.OSM Rolling Mill. Oregon Steel Mills. Retrieved on March 28, 2007. OSM manufactures armor plating for the U.S. military.Oregon Steel sale closes. Portland Business Journal, January 23, 2007. Also at the Portland Steelworks is OSM Tubular that makes pipes for use in areas such as oil and natural gas transmission, this plant was closed in 2015.OSM Tubular Retrieved on March 28, 2007. In Oregon, OSM also operates a structural tubing facility, the only producer in the Northwest, this plant was sold in 2015.Columbia Structural Tubing. Oregon Steel Mills. Retrieved on March 28, 2007.
References
Further reading Roger S. Ahlbrandt, The Renaissance of American Steel. Oxford University Press. 1996.
External links