miner wearing work uniform safety glove holding hard hat danger personal locks |
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| navigate by keyword : background business construction control danger document employment engineering equipment factory filling form hazard hazardous health industrial industry inspector isolated isolation lock lockout locks machine occupation open padlock people permit personal plant practices preventing procedure procedures red regulation regulations risk safety secure sign site success supervisor tag valve work |
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| Safe work practises construction worker wearing long sleeve work uniform safety hand glove protection holding hard hat danger personal safety locks with clipping paths |
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