Later, the smelter was shipped to Mexico. Attempts by the Arizona Smelting & Power Co. to initiate the 250-ton copper blast furnace at Benson in 1918 did not succeed.

The Hayden smelter had at least a 70% decline in toxic releases in 2018. That happened after the EPA “came down on them like a ton of bricks,” said Eric Betterton, a University of Arizona ...

South Africa's national mineral research organisation Mintek has achieved a significant milestone in sustainable metallurgy by demonstrating production of manganese ferroalloys using carbon-free ...

The Oklahoma Department of Environmental Quality recommended a$6.8 million plan Thursday night to clean up heavy-metal contaminants from a zinc smelter that closed in the 1920s.

Presently, there are 13 sheep and a couple Devon cows at the historic site. Volunteers are hard at work on an effort to help feed and maintain them.