Technicians working on systems to manage both waste and water.
Schlüsselwörter
working,
system,
manage,
both,
waste,
men at work,
construction,
engineer,
industry,
helmet,
factory,
safety,
work,
industrial,
hard hat,
building,
business,
people,
builder,
occupation,
job,
engineering,
site,
architect,
man,
foreman,
plant,
production,
contractor
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