IPC Subgroup
E21F 15/06 Filling-up mechanically
Introduced: September 1968
Last revised: January 2006
Full Title
Methods or devices for placing filling-up materials in underground workings > Filling-up mechanically
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