- المجال: Mining
- Number of terms: 33118
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- Company Profile:
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 ...
A monoclinic prism, the orthodiagonal intercept of which is greater than 1.
Industry:Mining
A monoclinic(?) material, CaFe<sub>14</sub>(PO<sub>4</sub>)<sub>10</sub>(OH)<sub>14</sub>.21H<sub>2</sub>O(?) ; forms yellowish-brown nodules with fibrous lamellar structure embedded in clay with trona and thernardite in the Eguei#1. region of Chad and Sudan. (Not yet adequately described for a mineral species.)
Industry:Mining
A monthly statement by a coal company on which a crooked line in red ink was drawn to show a miner's indebtedness. The company checked off rent, supplies, and groceries, which often added up to more than a miner's monthly earnings.
Industry:Mining
A montmorillonite-type clay formed by the alteration of volcanic ash. It varies in composition and is usually highly colloidal and plastic. Swelling bentonite is so named because of its capacity to absorb large amounts of water accompanied by an enormous increase in volume. Occurs in thin deposits in the Cretaceous and Tertiary rocks of the 293 Western United States. It is used for making refractory linings, water softening, decolorizing oils, thickening drilling muds, and preparing fine grouting fluids. As a mud flush, bentonite is used at a concentration of about 3 lb/ft<sub>3</sub>(48.1 kg/m<sub>3</sub>) of water.
Industry:Mining
A montmorillonite-type clay formed by the alteration of volcanic ash. It varies in composition and is usually highly colloidal and plastic. Swelling bentonite is so named because of its capacity to absorb large amounts of water accompanied by an enormous increase in volume. Occurs in thin deposits in the Cretaceous and Tertiary rocks of the 293 Western United States. It is used for making refractory linings, water softening, decolorizing oils, thickening drilling muds, and preparing fine grouting fluids. As a mud flush, bentonite is used at a concentration of about 3 lb/ft<sub>3</sub>(48.1 kg/m<sub>3</sub>) of water.
Industry:Mining
A montmorillonite-type clay formed by the alteration of volcanic ash. It varies in composition and is usually highly colloidal and plastic. Swelling bentonite is so named because of its capacity to absorb large amounts of water accompanied by an enormous increase in volume. Occurs in thin deposits in the Cretaceous and Tertiary rocks of the 293 Western United States. It is used for making refractory linings, water softening, decolorizing oils, thickening drilling muds, and preparing fine grouting fluids. As a mud flush, bentonite is used at a concentration of about 3 lb/ft<sub>3</sub>(48.1 kg/m<sub>3</sub>) of water.
Industry:Mining
A monument of a lasting character for marking a mining claim. It may be a mountain, hill, ridge, hogback, butte, canyon, gulch, river, stream, waterfall, cascade, lake, inlet, bay, arm of the sea, stake, post, monument of stone or boulders, shafts, drifts, tunnels, open cuts, or well-known adjoining patented claims.
Industry:Mining
