홈 > Term: hoist signal code
hoist signal code
Prescribed signals for indicating to the hoist operator the desired direction of travel and whether people or materials are to be hoisted or lowered in mines.
- 품사: noun
- 분야/도메인: 광업
- 카테고리: 일반 광산; Mineral mining
- Government Agency: USBM
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작성자
- ed.young
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