- Industry: 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 ...
Ark. Coal more difficult to mine than the standard, and for which the miners are paid an extra price.
Industry:Mining
Ark. That plan of mining coal in a room that requires the blasting of the two benches of coal alternately, each a little beyond the other.
Industry:Mining
Ark. That plan of mining coal in a room that requires the blasting of the two benches of coal alternately, each a little beyond the other.
Industry:Mining
Arkansas. A shot put into a large mass of coal detached by a previous blast.
Industry:Mining
Arkansas. A squeeze that extends into the workings beyond the pillar. It is said to ride over a pillar.
Industry:Mining
Arkansas. Coal that can be shot "off the solid" with a large proportion of lump coal and little slack.
Industry:Mining
Arkansas. One of a row of props of sufficient strength to cause the rock above the coal to break and so limit the area of top brought down by a brushing shot.
Industry:Mining
Arkansas. Seamy coal from which the powder gases escape with a squealing sound.
Industry:Mining
