- 업종: 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 crane embodying an automatic device that causes the load to move horizontally with any alteration of the operating radius.
Industry:Mining
A crane in which the top of the post is supported by fixed stays in the rear and the jib is pivoted like the boom of a derrick.
Industry:Mining
A crane that traverses the whole width of a workshop along the rails on which it runs.
Industry:Mining
A crane with one horizontal boom on which there is a counterweight. It can swing through a full circle.
Industry:Mining
A crest gate for dam spillways designed so that water pressure acting upon it will do so only at a definite level. It closes automatically when the water level falls to normal.
Industry:Mining
A crest gate that has a high frictional resistance to opening and is therefore suitable only for small gates.
Industry:Mining
A crew consisting usually of five people who are thoroughly trained in the use of mine rescue apparatus, and are capable of wearing it in rescue or recovery work in a mine following an explosion, or to combat a mine fire.
Industry:Mining
