- 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 ...
The increase in one dimension of a soil mass, expressed as a percentage of that dimension at the shrinkage limit to any given water content.
Industry:Mining
The increase in size that sometimes occurs when a refractory raw material or product is fired; it is usually expressed as a linear percentage expansion from the dry to the fired state. Firing expansion can be caused by a crystalline conversion (e.g., of quartz into cristobalite, or of kyanite into mullite plus cristobalite), or by bloating.
Industry:Mining
The index numbers assigned to a diffracted X-ray beam. They have the same values as Miller indices but are written without closures. Diffraction order may be factored into Bragg indices, e.g., 111, 222, 333... represent n = 1, 2, 3... for diffraction from atomic planes parallel to 111 . Compare: Miller indices
Industry:Mining
The indirect evaluation of water depth, using the principle of measuring the length of time necessary for a sound wave to travel to the bottom, reflect, and travel back to the water surface.
Industry:Mining
The indistinct six-rayed star produced on a mica plate after pressing with a dull point. Compare: percussion figure
Industry:Mining
The individual portions into which the part of a washbox below the screen plate is divided by transverse division plates, each being capable of separate control.
Industry:Mining
The industry that supplies the community with the various metals and associated products. Similar to coal mining, it is an extractive industry, and once the raw material, the orebody, is depleted it is not replenishable.
Industry:Mining
The influence of structural features on ore deposition, e.g., ore minerals filling fractures. Compare: stratigraphic control
Industry:Mining
The ingredients before being processed that enter into a finished product.
Industry:Mining
