- 行业: Mining
- Number of terms: 33118
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The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
An iron-bearing sedimentary deposit, e.g., the Clinton ore, composed of disk-shaped hematitic oolites that have been somewhat flattened parallel to the bedding plane. Compare: fossil ore
Industry:Mining
An iron-bearing sedimentary deposit, in which shell fragments have been replaced and cemented together by hematite and carbonate. Compare: flaxseed ore
Industry:Mining
An iron-bearing weathered product overlying a sulfide deposit. It is formed by the oxidation of sulfides and the leaching-out of the sulfur and most metals, leaving hydrated iron oxides and rarely sulfates.
Industry:Mining
An iron-bearing weathered product overlying a sulfide deposit. It is formed by the oxidation of sulfides and the leaching-out of the sulfur and most metals, leaving hydrated iron oxides and rarely sulfates.
Industry:Mining
An iron-bearing weathered product overlying a sulfide deposit. It is formed by the oxidation of sulfides and the leaching-out of the sulfur and most metals, leaving hydrated iron oxides and rarely sulfates.
Industry:Mining
An iron-bearing weathered product overlying a sulfide deposit. It is formed by the oxidation of sulfides and the leaching-out of the sulfur and most metals, leaving hydrated iron oxides and rarely sulfates.
Industry:Mining
An iron-ore pellet made by mixing minor amounts of a ground flux (forsterite, calcite, dolomite, or lime) with the magnetite or hematite concentrate to decrease smelting times and coke consumption.
Industry:Mining
An ironstone miner who excavates and sets timber supports in roadways through wastes and disturbed ground.
Industry:Mining
