GTA develops and manufactures stable, robust and thus durable equipment for the tunneling and mining industries offering a high degree of operational reliability and ease of use.
For tunnelling operations GTA develops and manufactures machines such as work platforms, shotcrete manipulators, support manipulators and drilling equipment for the ′second working level′.
n the mining industry our focus is roadway development in underground hard coal operations. The deployment of GTA machines permits efficient, safe and economic roadway development.

The Tunnel Support Machine TAM 8500 iis an alternative to the TVP Tunnelling Portal. Rather than being mounted on skids it is suspended from and travels on two overhead rails.
The ability to suspend the rails from load-bearing roofbolts or steel arches is a prerequisite of use for this machine. Up to four longitudinal slider tracks are arranged beneath the overhead travelling bridge frame. Various machines, such as drills, shotcrete manipulators and work baskets, can be attached to these tracks as required.
The Tunnel Support Machine TAM 8500 is moved along the two overhead rails by means of a GTA push-pull unit.

• High flexibility due to the ability to attach drilling equipment, work baskets and support and shotcrete manipulators on four optional slider tracks
• Maximum flexibility and parallelisation of operations.
• Creation of space for other equipment on the tunnel floor as the machine is suspended from an travels on overhead rails
• Optimum operation by a user programmable radio remote control with proportional control valves
• Robust machine design suitable for use in tunnel applications