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United States Bureau of Mines
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 ...
An electric line wrapped around a dynamite charge and connected to a telephone or radio circuit. The explosion breaks the circuit to record the shot instant or moment. Use is largely obsolete.
Industry:Mining
An electric locomotive carrying the official approval plate of the U.S. Mine Safety and Health Administration.
Industry:Mining
An electric locomotive designed for use underground.
Industry:Mining
An electric locomotive having a cable on a reel and connected both with the locomotive motor and the trolley wire in the entry, so that the locomotive may be driven into an unwired room.
Industry:Mining
An electric mine locomotive used for hauling trains of cars, which have been gathered from the working faces of the mine, to the point of delivery of the cars.
Industry:Mining
An electric motor rated at less than 1 hp (746 W) output that operates on either direct or alternating current.
Industry:Mining
An electric motor-driven drill designed for drilling holes in coal for placing blasting charges.
Industry:Mining
An electric motor-driven drill designed for drilling holes in coal for placing blasting charges.
Industry:Mining
An electric or electromechanical device that limits current amplitude; duration of current flow; or total energy of the current delivered to an electric blasting circuit.
Industry:Mining
An electric or nonelectric detonator used to introduce a predetermined time lapse between the application of a firing signal and detonation.
Industry:Mining
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