IPC Main Group
E21C 47/00 Machines for obtaining, or the removal of, materials in open-pit mines
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- MINING OR QUARRYING
Related Keywords
OPEN-CAST mining
2 direct subcodes
Child Classifications
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- E21C 47/02 for coal, brown coal, or the like
- E21C 47/1 for quarrying stone, sand, gravel, or clay