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IPC Subgroup
E21D 17/03

Brackets for roof-supporting bars

Introduced: September 1968

Last revised: January 2006

Full Title

Caps for supporting mine roofs > Cantilever extension or similar protecting devices > Brackets for roof-supporting bars

Classification Context

Section:
FIXED CONSTRUCTIONS
Class:
EARTH OR ROCK DRILLING; MINING
Subclass:
SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS