Miners in hardhats at work in a mine. Concept Miners, Hardhats, Work, Mine, Industry
Palabras clave
miner,
work,
mine,
safety,
underground,
excavation,
labor,
helmet,
coal,
mineral,
shaft,
drilling,
dust,
rock,
extraction,
machinery,
labourer,
danger,
darkness,
ore,
tool,
laboring,
cavern,
laborious,
force,
union,
law,
market,
camp,
shortage,
challenged,
cost,
right,
movement,
condition,
regulation,
productivity,
statistic,
economic,
relation,
in,
at
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