- 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 charge in one drill hole only fired at one time, as contrasted with a multiple shot where charges in a number of holes are fired at one time.
Industry:Mining
A charge of dynamite spaced well apart in a borehole and fired by separate primers or by a detonating cord.
Industry:Mining
A charge of dynamite, or other high explosive, fired in contact with the surface of a rock after being covered with quantity of wet mud, wet earth, or sand, no borehole being used. The slight confinement given the dynamite by the mud or other material permits part of the energy of the dynamite being transmitted to the rock in the form of a blow. A 2073 mudcap may be placed on top or to one side, or even under a rock, if supported, with equal effect.
Industry:Mining
A charge of dynamite, or other high explosive, fired in contact with the surface of a rock after being covered with quantity of wet mud, wet earth, or sand, no borehole being used. The slight confinement given the dynamite by the mud or other material permits part of the energy of the dynamite being transmitted to the rock in the form of a blow. A 2073 mudcap may be placed on top or to one side, or even under a rock, if supported, with equal effect.
Industry:Mining
A charge of dynamite, or other high explosive, fired in contact with the surface of a rock after being covered with quantity of wet mud, wet earth, or sand, no borehole being used. The slight confinement given the dynamite by the mud or other material permits part of the energy of the dynamite being transmitted to the rock in the form of a blow. A 2073 mudcap may be placed on top or to one side, or even under a rock, if supported, with equal effect.
Industry:Mining
A charge of dynamite, or other high explosive, fired in contact with the surface of a rock after being covered with quantity of wet mud, wet earth, or sand, no borehole being used. The slight confinement given the dynamite by the mud or other material permits part of the energy of the dynamite being transmitted to the rock in the form of a blow. A 2073 mudcap may be placed on top or to one side, or even under a rock, if supported, with equal effect.
Industry:Mining
A charge of explosive in a drill hole divided into two or more parts that are separated by stemming.
Industry:Mining
A charge of explosive that occupies the entire drill hole, except for the space at the top required for stemming.
Industry:Mining
A charge of explosives in a borehole that depends for its effect upon the result of one or more previously fired shots.
Industry:Mining
A charge of explosives or blasting agent receiving an impulse from an exploding donor charge.
Industry:Mining
