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NMMR's oldest mine: 1792 anthracite coal, "Old Mine." One of NMMR's oldest mine maps: 1859 anthracite coal map from Hazleton Coal Co. The NMMR contains digital and microfilm maps of surface and underground coal, metal, and non-metal mines throughout the United States. Some of the information that can be obtained from the repository includes:
One of only two shaft mines dug in the Birmingham District, and the last ore mine to operate in the region, closing in 1971. Sloss Mines: Alabama 33.39816°N 86.93276°W Red Mountain: Sloss Iron and Steel Company: 1882–1960s A group of mines in southwestern Jefferson County, Alabama. [2]
As such, the Arkansas Surface Coal Mining and Reclamation Act, Act 134 of 1979, authorized the State to develop, adopt, issue, and amend rules and regulations pertaining to surface coal mining and reclamation operations. Active coal mines must comply with APCEC Regulation 20 (Arkansas Pollution Control and Ecology Commission, 2002).
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Crater of Diamonds State Park is a 911-acre (369 ha) Arkansas state park in Pike County, Arkansas, in the United States. The park features a 37.5-acre (15.2-hectare) plowed field, one of the few diamond -bearing sites accessible to the public.
Initially, Arkansas bauxite met 90% of US aluminum demand. Underground mining before and during World War II gave way to open pit mining in the 1960s. During the war, up to six million tons were mined in 1943. Arkansas bauxite mines were often passed over in favor of higher quality bauxite reserves in the Caribbean and mining ceased in 1982.
Norfork Dam impounds the North Fork River in the U.S. state of Arkansas, creating Norfork Lake. The large reservoir is maintained by the United States Army Corps of Engineers and spans Baxter County, Arkansas, Fulton County, Arkansas and Ozark County, Missouri. The dam is located in the city of Salesville in Baxter County, within the Ozark ...
The Siilinjärvi carbonatite complex, [1] an open-pit mine owned by Yara International, in Siilinjärvi, Finland Coal strip mine in Wyoming. Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the ...