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IPC Main Group
E21F 16/00

Drainage

Introduced: July 1974

Last revised: January 2006

Classification Context

Section:
FIXED CONSTRUCTIONS
Class:
EARTH OR ROCK DRILLING; MINING
Subclass:
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS

Related Keywords

DRAINAGE of minesdraining PIT(S) in minesSUMP(S) in minesWINZES for draining mines

1 direct subcode

Child Classifications

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