Inspection of Underground Tunnel by Technicians in Hard Hats and High-Visibility Clothing
Keywords
men at work,
inspection,
examining,
teamwork,
hard,
maintenance,
engineering,
safety,
infrastructure,
site,
gear,
hat,
tunnel,
checking,
industrial,
protective,
regulation,
occupational,
procedure,
work,
underground,
clothing,
fluorescent,
cone,
equipment,
construction,
surveying