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Drawing-off or depositing dust
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Industry
CPC
E21F5/20
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Parent Industries
E
FIXED CONSTRUCTIONS
E21
Mining
E21F
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
E21F5/00
Means or methods for preventing, binding, depositing, or removing dust Preventing explosions or fires
Current Industry
E21F5/20
Drawing-off or depositing dust
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