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Quantitative mineral-resource assessments are defined as the numerical estimate of the amount, quality, and in some cases, value of undiscovered minerals (that is, metal or industrial mineral) present within a specified area (tract). Their purpose is to provide a framework for making decisions by governments or institutions concerning mineral ...
A Mineral Reserve is the economically mineable part of a Measured or Indicated Mineral Resource demonstrated by at least a Preliminary Feasibility Study. This Study must include adequate information on mining, processing, metallurgical, economic and other relevant factors that demonstrate, at the time of reporting, that economic extraction can ...
The Geological Survey of Arkansas was first established in 1857, at the direction of Governor Elias Nelson Conway. David Dale Owen was the agencies first geologist. Initially, the agency received funding for only three years, which limited the agencies findings and publications, and the agency was left without funding during the Civil War.
A Probable Mineral Reserve has a lower level of confidence than a Proved Mineral Reserve but is of sufficient quality to serve as the basis for decision on the development of deposit. A Proved Mineral Reserve is the economically mineable part of a Measured Mineral Resource. It includes diluting materials and allowances for losses which occur ...
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.
160 acres, operated by the Arkansas Game and Fish Commission, geology, wildlife and natural history of Crowley's Ridge: Delta Rivers Nature Center: Pine Bluff: Jefferson: Central: website, operated by the Arkansas Game and Fish Commission in 130-acre Pine Bluff Regional Park, natural and cultural history of the Arkansas River, aquariums
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Pope County, and a small portion from Madison County (prior 1890) Benjamin Johnson (1784–1849), the first judge of the federal district court for Arkansas 26,129: 682.74 sq mi (1,768 km 2) Lafayette County: 073: Lewisville: Oct 15, 1827: Hempstead County and later from Columbia County (prior 1910)