Two engineers at an industrial plant. Crushed stone production plant. Gravel
Palabras clave
background,
business,
silhouette,
technology,
construction,
stone,
plant,
machinery,
equipment,
industrial,
machine,
industry,
gravel,
quarry,
conveyer,
environment,
ecology,
manufacturing,
pit,
pollution,
rock,
work,
material,
mine,
crusher,
air,
limestone,
crushed stone,
technique,
panorama,
debris,
heavy,
mining,
production,
raw,
factory,
sky,
mashed,
complex,
excavation,
resource,
smog,
burma,
line,
dirty,
dust,
extraction,
cement
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