Coal miner. Coal mine background
Palabras clave
miner,
coal,
mine,
men at work,
industrial,
hard hat,
hard hat,
helmet,
safety,
underground,
tunnel,
dusty,
dirty,
occupation,
job,
labor,
excavation,
person,
digging,
extraction,
machinery,
equipment,
headlamp,
face,
dark,
cave,
rock,
mineral,
fossil fuel,
industry,
energy,
hat,
natural resource,
cap
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