Press Release

Drilling rigs for rescue shafts in China: BAUER Group sells six RBT90 deep drilling rigs


Schrobenhausen – In mid-September BAUER Group company PRAKLA Bohrtechnik GmbH, a subsidiary of BAUER Maschinen GmbH, agreed to supply six universal drilling rigs of type RBT90 to the Chinese coal extraction company China National Coal Development Co. Ltd. The rigs will be used as necessary to sink emergency shafts in order to rescue trapped miners quickly and safely.

Prof. Thomas Bauer, Chairman of the Management Board of BAUER AG, comments: "With this sale we have made another major step forward in implementing the strategy of our new deep drilling business. We are proud that our machines are being deployed on such an important task, which demands high levels of technical reliability."

A key feature of the RBT90 drilling rigs from PRAKLA Bohrtechnik GmbH is their mobility: Built on a truck trailer, they can be moved quickly to any location where they may be needed. The six rigs are being built in the Bauer Maschinen plant at the corporate headquarters in Schrobenhausen, Bavaria. They will be shipped to six mine operating companies over the next 12 months.


Universal drilling rigs from PRAKLA Bohrtechnik GmbH are designed to cover a wide variety of applications and implement many different drilling methods, meaning the technical specifications stipulated by the customer were fully met. RBT90 drilling rigs offer a maximum load-carrying capacity of 90 tonnes. Their maximum drilling depth with small diameters is 3,000 metres. When drilling at 700 millimetres diameter, as specified by the customer in China, bores can be sunk down to a depth of 700 metres.

For example, the rescue shaft which had to be drilled in autumn 2010 in Chile was similar deep. At that time, a spectacular rescue operation called "The miracle of Chile" made headlines around the world: 33 miners spilled in the gold and silver mine San José had to endure 69 days until their rescue. After a nearly 700 metres deep rescue shaft had been drilled, it was finally possible to rescue al miners by means of a rescue capsule.