- 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 ...
Routine sampling by mine officials for systematic control of mining operations.
Industry:Mining
Royalty or rent paid by the lessee for working and disposing of minerals at the rate of so much per acre.
Industry:Mining
Ruby and nonruby block mica. Good-stained or better qualities, grade No. 6 or larger; ruby-stained A/B quality, grade No. 6 or larger; ruby and nonruby film, first and second qualities, grade No. 4 and smaller; muscovite and phlogopite splittings; and phlogopite block of high heat quality.
Industry:Mining
Rule made to control a specific sampling investigation, which defines the point at which no further observations are to be made, and the nature of the decision that is to be agreed upon. In a series of sampling operations, each successive decision function depends on those that have preceded it.
Industry:Mining
Rules and regulations proclaimed by the miners of any district relating to the location, recording, and the work necessary to hold possession of a mining claim. It was the miners' rules of the early days of the mining industry that were the basis of the present laws. The local mining laws and regulations of 1849 and later are given in vol. 14, 10th Census of the United States, 1880, compiled by Clarence King.
Industry:Mining
(South Africa) A gold-bearing reef regarded as the principal carrier of gold in the Orange Free State. It has been associated with the Elsburg series of the central Witwatersrand and occurs below what has become known as the leader reef.
Industry:Mining
