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The Arizona Department of Mines and Mineral Resources (ADMMR) is a state government agency in the U.S. state of Arizona that has the purpose of promoting and developing the state's mineral resources. The department was established in 1939 as the Arizona Department of Mineral Resources. [1]
Darling Cinder Pit is a cinder pit mine near Winona, Arizona.It was named in honor of William B. Darling, a local railroad engineer. [1]The mine is located near Cinder Mountain, a Tappan age basaltic cinder cone north east of Winona [2] In 1985 it was noted that the pit was the largest cinder-producing site in Arizona, with Arizona having the highest cinder production of any state in the US. [3]
On May 28, 2010, Senator Jay Rockefeller (D-WV) released a list of proposed changes to mine safety laws including re-establishing the Bureau of Mines. [8] In July 5, 2024, a renewed push by mining companies to revive the Bureau of Mines occurred who are seeking to streamline regulations. [9] [10]
In Arizona, copper mining has been a major industry since the 19th century. In 2007, Arizona was the leading copper-producing state in the country, producing 750 thousand metric tons of copper, valued at $5.54 billion. Arizona's copper production was 60% of the total for the United States. Copper mining also produces gold and silver as ...
Resolution Copper Mining, a joint subsidiary of U.K. and Australian mining giants Rio Tinto and BHP, hopes to build one of the world’s largest underground copper mines at the site outside ...
The area around Antler Mine includes several other notable mineral deposits, including those exploited by the Copper World Mine and the Boriana Canyon and Bull Canyon, Arizona deposits. While the land is managed by the Bureau of Land Management , the mineral rights for Antler mine were purchased by Standard Metals Incorporated in 1987.
Resolution Copper has proposed to give the federal government 5,376 acres (21.76 km 2) of environmentally sensitive land in Arizona in exchange for the 2,422-acre (9.80 km 2) oak flat federal parcel, [12] which includes the Oak Flat Campground (protected since 1955) and several outdoor climbing sites including the Mine, Atlantis and the Pond.
Sierrita was operated by Cyprus Mines (later Cyprus Amax Minerals) from 1986 to 1999. Sierrita was operated by Phelps Dodge from 1999 until 2007 when it was acquired by Freeport-McMoRan. The mine has one of the largest copper reserves in the United States and in the world.