Light in the tunnel. Heading machine creates a tunnel
Schlüsselwörter
mine,
mining,
machine,
industry,
industrial,
underground,
tunnel,
way,
lamp,
protection,
arch,
fixture,
armature,
grid,
rock,
light,
truck,
construction,
vehicle,
equipment,
sand,
bulldozer,
work,
machinery,
heavy,
car,
heading,
engineering,
breakthrough,
doorway,
ore,
coal,
gold,
pike,
drill,
perforator,
gallery,
bit,
mountain,
cavern,
cave
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