Roof bolt drilling and setting apparatus

Roof prop and platform movably mounted on boom of tunnelling mac

Shearing machine with roof-bolt drilling and setting devices

Shield advancing machine

Shield assemblies for installation in under-ground roadways and

Shield tunnel boring machine

Shield tunneling machine

Shield tunneling machine

Shield tunneling machine

Shield tunneling machine and earth removing apparatus therefor

Shield unit

Shield-type tunneling machine with toggle controlled bit plates

Shielded cutterhead with small rolling disc cutters

Tunnel boring machine

Tunnel driving apparatus

Tunnel driving apparatus

Tunnel driving apparatus with cutter arms internal and external

Tunnel excavator

Tunnel excavator with crawler drive and roof support bearing...

Tunneling equipment