3:16

Atlas Copco - Roofex rock bolt providing peace of mind

5:03

Pull Out Test for Rock bolt

3:05

Tunnel Lining

5:47

Conventional bolting a refuge station in a track drift.

2:10

Normet Spraymec 8100 VC

3:25

Sandvik DD-421 bolter

2:58

ROCK BOLT TUNNEL

4:40

Mobile Equipment in Underground Mines.