worker hand holding gas test detector device while commencing safety testing atmosphere main entry and exit confined spa |
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| navigate by keyword : and atmosphere australia background black blue carbon commencing concept confined constructor danger design detector device director door emissions entry environment equipment exit gas green greenhouse hand helmet holding hydrogen industrial industry isolated machine main mining monoxide natural nature officer park people prior protection safety sensor sign site sky space sulfide technology test testing tool uniform water welding while work worker yellow |
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| Constructor worker hand holding gas test director device while commencing safety gas testing atmosphere at main entry and exit on confined space door prior to work construction mine site, Australia |
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