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  2. Gold in California - Wikipedia

    en.wikipedia.org/wiki/Gold_in_California

    Because the gold in the California gravel beds was so richly concentrated, the early forty-niners simply panned for gold in California's rivers and streams, a form of placer mining. [ 10 ] [ 11 ] However, panning cannot take place on a large scale, and industrious miners and groups of miners graduated to placer mining " cradles " and "rockers ...

  3. Mountain Pass Rare Earth Mine - Wikipedia

    en.wikipedia.org/wiki/Mountain_Pass_rare_earth_mine

    The Mountain Pass Rare Earth Mine and Processing Facility, owned by MP Materials, is an open-pit mine of rare-earth elements on the south flank of the Clark Mountain Range in California, 53 miles (85 km) southwest of Las Vegas, Nevada. In 2020 the mine supplied 15.8% of the world's rare-earth production.

  4. California Steel Industries - Wikipedia

    en.wikipedia.org/wiki/California_Steel_Industries

    California Steel Industries is a steel processing and finishing company that operates a facility near Fontana, California. The Fontana plant was built in 1942 by Kaiser Steel , which operated it until December 1983, when it was shuttered as part of the general termination of Kaiser's steel business. [ 1 ]

  5. Gold mining in the United States - Wikipedia

    en.wikipedia.org/wiki/Gold_mining_in_the_United...

    Gold production in California peaked in 1852, at 3.9 million troy ounces (121 tonnes) produced in that year. But the placer deposits worked in the early years were quickly exhausted, and production crashed. Hardrock mining (in California called quartz mining) began in 1849, and placer mining by hydraulic mining began in 1852.

  6. Copper mining in the United States - Wikipedia

    en.wikipedia.org/wiki/Copper_mining_in_the...

    Most California copper production came from the West Shasta district in northern California. Gold prospectors discovered the copper deposits of Shasta County in 1848, but no metal was produced until 1879, when some silver was produced from the Iron Mountain Mine. The copper was in massive sulfide deposits in the Devonian Balaklala Rhyolite.

  7. Iron and steel industry in the United States - Wikipedia

    en.wikipedia.org/wiki/Iron_and_steel_industry_in...

    In 2022, the U.S. was the third-largest producer of raw steel worldwide, after China and India, and ranked sixth in pig iron production. By November 2024, the industry produced over 74 million net tons annually. The industry produced over 74 million net tons per year as of November 2024. [1]

  8. History of the iron and steel industry in the United States

    en.wikipedia.org/wiki/History_of_the_iron_and...

    Steel production by countries. United States steel production faced a steep decline in the 1970s. As the only major steel maker not harmed during World War II, the United States iron and steel industry reached its maximum world importance during and just after World War II. In 1945, the US produced 67% of the world's pig iron, and 72% of the steel.

  9. Kaiser Aluminum - Wikipedia

    en.wikipedia.org/wiki/Kaiser_Aluminum

    Kaiser Aluminum Corporation is an American aluminum producer. It is a spinoff from Kaiser Aluminum and Chemicals Corporation, which came to be when common stock was offered in Permanente Metals Corporation and Permanente Metals Corporation's name was changed to Kaiser Aluminum and Chemicals Corporation.