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Civil crew guides green PVC pipe into trench box during sanitary main installation as excavator assists with material delivery overhead.
Inside male worker into the inspection shiny tank stainless chemical into area confined space.
Male worker inspection the tank carbon chemical oil interface area confined space safety.
Employees inspect by taking photographs of internal pressure tanks in confined spaces.
Occupational health and safety closeup picture of confined spaces permit book placing on the table with defocused worker conducting writing job hazard analysis risk assessment safety auditor

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