- 行业: 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 ...
A method by which the load bearing capacity of a soil may be estimated.
Industry:Mining
A method developed for testing coal dust to obtain the limits of explosibility.
Industry:Mining
A method employed in some mines in which material is transported and stowed pneumatically through pipelines.
Industry:Mining
A method enabling a road to be built across peat deposits. Hard filling is first dumped over the route to a height equal to the ascertained depth of the peat, into which blasting charges are inserted. By the action of blasting, the peat is displaced outwards and the hard fillings sink into place and can then be consolidated.
Industry:Mining
A method for casting liquid metal or steel continuously into rolls for sheet or plate. The steel is poured on to the outer surface of a broad steel cylinder of very large diameter (up to 6 m) that is supported and revolved by a roller turning inside it. The molten steel is carried a short distance to a roller revolving above the ring, which rolls the almost solidified steel into a thin plate or strip.
Industry:Mining
A method for charging batch designed to produce an even distribution of batch across the width of the furnace.
Industry:Mining
A method for converting pig iron into a product with a low carbon content, which is suitable as a substitute for steel scrap for remelting in steel furnaces.
Industry:Mining
A method for decreasing the ground motion generated by an underground explosion. The method involves the firing of the explosive in the center of an underground cavity so that the surrounding medium is not in close proximity to the explosive.
Industry:Mining
A method for desulfurizing iron and steel with metal hydrides in which a molten slag is floated on a mass of molten ferrous metal and at least one metal hydride is introduced into the mass. The molten ferrous metal is separated from the slag, the metallic hydrides breaking down into metal and nascent hydrogen. Hydrides of the alkali metals have been found very satisfactory and are readily available.
Industry:Mining
A method for determining the plasticity of clay in terms of the difference between the water content when the clay is just coherent and when it begins to flow as a liquid.
Industry:Mining
