Inicio > Term: opener hole
opener hole
The first hole or holes fired in a round blasted off the solid to create an additional free face in a coal mine.
- Parte del discurso: noun
- Industria/ámbito: Minería
- Categoría: Minería general; Mineral mining
- Government Agency: USBM
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Creador
- ed.young
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(Milwaukee, United States)
