blast hole (blasthole)

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mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… … Universalium
Paul Worsey — Paul N. Worsey is a tenured professor and well known mining and explosives expert and researcher at the Missouri University of Science and Technology (formerly the University of Missouri Rolla). Outside of teaching, research, and writing in his… … Wikipedia

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