Auxiliary devices for temporary support of roof-supporting beams whilst assembling

Full Title

Caps for supporting mine roofs > Cantilever extension or similar protecting devices > Auxiliary devices for temporary support of roof-supporting beams whilst assembling

Classification Context

Section:

FIXED CONSTRUCTIONS

Class:

EARTH OR ROCK DRILLING; MINING

Subclass:

SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS