Membership
Tour
Register
Log in
SHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS
Follow
Industry
CPC
E21D
Parent Industries
E
FIXED CONSTRUCTIONS
E21
Mining
Current Industry
E21D
SHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS
Sub Industries
E21D1/00
Sinking shafts
E21D11/00
Lining tunnels, galleries or other underground cavities
E21D13/00
Large underground chambers Methods or apparatus for making them
E21D15/00
Props Chocks
E21D17/00
Caps for supporting mine roofs
E21D19/00
Provisional protective covers for working space
E21D20/00
Setting anchoring-bolts
E21D21/00
Anchoring-bolts for roof, floor in galleries or longwall working , or shaft-lining protection
E21D23/00
Mine roof supports for step- by- step movement
E21D3/00
Raising shafts
E21D5/00
Lining shafts Linings therefor
E21D7/00
Shaft equipment
E21D8/00
Shafts not provided for in groups E21D1/00 - E21D7/00
E21D9/00
Tunnels or galleries, with or without linings Methods or apparatus for making thereof Layout of tunnels or galleries
Industries
Overview
Organizations
People
Information
Impact
Please log in for detailed analytics
CPC
E21D
