Workers In Water Purification Beds

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18-19 year old 18-19 years 20-24 years 25-29 years 30-34 years 35-39 years 649- adult arms in air back backside back view Caucasian ethnicity Caucasian ethnicity (male) clipboard close-up coal mine color image color photography color picture country coveralls coworker day Drainage employed environment environmental issues Europe European European (places and things) examination examining (scrutinize) full length glove growth hard hat head and shoulders holding image industry INSPECTED inspecting male male coworker male supervisor male worker man marine animal mid adult mid adult men mining model release new growth observing occupation outdoors over the shoulder view people person photograph photography picture property release protection protection (protection against dangerous situations, substances or products) reed reed (grass) regenerating relate (co-workers) relationship rural scene safety Scotland scrutiny security site stand standing stock photograph stock picture study studying supervisor surveying surveyor surveyor (male) teamwork teenager together two (quantity) two people United Kingdom watching wave waving waving (hand gesture) worker working young adult young men