- 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 ...
Age determination of naturally occurrring substances or relicts by any of a variety of methods based on the amount of change, happening at a constant measurable rate, in a 845 component. The changes may be chemical, or induced or spontaneous nuclear, and may take place over a period of time.
Industry:Mining
Agglomeration process sometimes used in coal cleaning and briquetting. Raw coal crushed to minus 65 mesh is agitated with water and oil. Coal agglomerates and ashforming fraction are removed in aqueous solution.
Industry:Mining
Aggregation of ferromagnetic atoms into a group, usually a fraction of a micrometer in size, which lies among similar groups with random group orientation. This cancels out any magnetic moment until or unless they all are oriented by an applied magnetic field.
Industry:Mining
Aging at a higher temperature, or for a longer time, or both, than required for critical dispersion, thus causing particle agglomeration of the precipitating phase and, as a result, loss of strength and hardness.
Industry:Mining
Agitation of the drilling fluid in a pit by forcing a portion of the fluid under pressure through a constricted tube or gun, jetting it into the main body of fluid.
Industry:Mining
Agreed average value, as between buyer's and seller's assay, used as pricing basis in sale of mineral.
Industry:Mining
Air blowing. Tossing up dry powdered auriferous material in air, and catching the heavier particles not blown away.
Industry:Mining
