- Industry: Mining
- Number of terms: 33118
- Number of blossaries: 0
- 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 ...
The principal underground road in a district along which mined material is conveyed to the shafts, generally forming the main intake air course of each district.
Industry:Mining
The process adopted for cleaning and sizing coal for the market. Specialists select the best process for any particular run-of-mine coal. Many conflicting factors must be weighed. The cost of a detailed investigation is well repaid in higher recoveries, in flexibility, and in ease of operation and maintenance.
Industry:Mining
The process by which a number of individual, minute suspended particles are tightly held together in clotlike masses, or are loosely aggregated or precipitated into small lumps, clusters, or granules; e.g., the joining of soil colloids into a small group of soil particles, or the deposition or settling out of suspension of clay particles in salt water.
Industry:Mining
The process by which a rock becomes mobile and deforms viscously as a result of at least partial fusion, commonly accomplished, if not promoted, by addition of new material by diffusion.
Industry:Mining
The process by which a soil becomes more acid owing to depletion of bases, and develops surface layers that are leached of clay and develop illuvial B horizons; the development of a podzol. Also spelled: podsolization.
Industry:Mining
The process by which a vapor becomes a liquid or solid; the opposite of evaporation.
Industry:Mining
The process by which magmas, originating at considerable depths, are considered to have been driven up through deep-seated contraction fissures.
Industry:Mining
The process by which more than one rock type is derived from a parent magma. Compare: assimilation
Industry:Mining
The process consists essentially of pouring molten metal from a primary open-hearth furnace on a heated solid charge of heavy and light alloy scrap (20% to 40% of total). The charge is melted and finished under reducing conditions. There is no boil.
Industry:Mining
