![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.002_1.jpg)
Rocky Mountain Steel, in Pueblo, Colorado, was the first integrated steel mill built west of the Mississippi River.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.003_0.jpg)
The first rail came out of the plant in 1882. The plant is still making steel today, though its blast furnaces are not used.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.004_0.jpg)
It was operated mostly by Colorado Fuel and Iron Company (CF&I), which was created by mergers in 1892, and soon became the largest steel producer in the West.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.005_0.jpg)
Bankrolled by Rockefeller and Gould, by 1904, CF&I was Colorado’s largest employer up to the mid-20th century.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.006_0.jpg)
This was the company’s principal mill, and one of the ten largest in the world for a time.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.007_0.jpg)
In 1972, the plant had more than 6,000 workers. CF&I operated plants in New Jersey and San Francisco.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.008_0.jpg)
In 1983, the plant laid off 60% of its workforce of 5,500. It was bankrupt by 1990, and was purchased by Oregon Steel Mills Inc. in 1993.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.009_0.jpg)
In 2007 it was bought by Evraz, a Russian mining and steel company.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.010_0.jpg)
Much of the old plant site is inactive or leased to other companies.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.011_0.jpg)
Steelmaking activity at the site is currently limited to creating wire and pipe from scrap steel in an electric arc furnace.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.012_0.jpg)
For many years worker access to the plant was from the administration complex and hospital, through a tunnel under the highway.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.013_0.jpg)
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.014_0.jpg)
The old office complex now houses the archives for the company, and a small museum for the steel works.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.015_0.jpg)
CF&I had 60 mining operations around Colorado and in other states, for coal, dolomite, calcite and iron, and operated more than 14 company towns.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.016_0.jpg)
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.017_0.jpg)
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.018_0.jpg)
An old rail car at the museum was a rolling hospital, which could be dispatched to manage the injured at the company’s mines and remote operations.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.019_0.jpg)
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.020_0.jpg)
The remains of the blast furnaces, visible across the highway, are off limits to the public.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.021_0.jpg)
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.022_0.jpg)
The Columbia Steel Company opened a plant on the southern shore of Suisun Bay, east of San Francisco, in 1906.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.023_0.jpg)
It was enough of an industrial hope for the small community that it changed its name from Black Diamond, to Pittsburg, in reference to the Pennsylvania steel town - but without the “h,” which was deemed unnecessary.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.024_0.jpg)
The plant expanded through World War II, but then shrank again.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.025_0.jpg)
Today it is a steel finishing plant, no longer making new steel, operated by U.S. Steel in partnership with South Korean company, POSCO.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.026_0.jpg)
The other large steel plants in the West were built during World War II, to supply steel to shipyards and other wartime construction. Geneva Steel in Utah is one example.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.027_0.jpg)
The plant was built with federal funds in 1944, on the shores of Utah Lake, near Provo.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.028_0.jpg)
The plant was operated by Columbia Steel Corporation and U.S. Steel.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.029_0.jpg)
It operated until 2001, and has since been nearly completely demolished.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.030_0.jpg)
Kaiser Steel built the largest steel plant on the west coast during World War II.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.031_1.jpg)
Located in the Los Angeles area’s Inland Empire town of Fontana, the plant operated for many years after the war.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.032_1.jpg)
It employed more than 2,500 workers at its peak.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.033_1.jpg)
Kaiser Steel declared bankruptcy in the 1980s, and much of the plant was torn down and redeveloped.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.034_1.jpg)
Some of its modern components were purchased by the Chinese government, disassembled by a Chinese crew, and reassembled in China.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.035_1.jpg)
A large part of the plant was paved over and turned into an automotive race track, California Speedway.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.036_1.jpg)
Another portion is operated as California Steel Industries, making pipe and steel products out of slabs and rolls from other sources.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.037_1.jpg)
California Steel Industries and other parts of the old Kaiser Plant are used for filming explosive scenes for action movies, like Terminator.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.038_1.jpg)
At the northern end of the plant site is Tamco, currently California’s only producing steel mill. Though it is not Old Steel by any means, its modern mini-mill, using scrap melted in an electric furnace, makes 500,000 tons of rebar per year.
![Old Steel](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-07/West.039_1.jpg)
This is the sort of plant that now dominates steel production in the USA. There are around 130 electric arc furnace mini-mills, making new steel from scrap.
![CLUI logo](https://clui-files.s3.us-east-2.amazonaws.com/s3fs-public/2022-08/CLUI%20logo.001_0.jpg)