Means for driving the back walls of a bucket excavator
Mechanical excavating machines including rotary cutter and sucti
Mechanism for supporting an earthworking etc. tool
Method for making a trench wall in the ground, trench wall...
Method for making a trench wall in the ground, trench wall...
Method for making a trench wall in the ground, trench wall...
Method of operating a bucket wheel excavator
Method of producing bucket wheel bodies and bucket wheel body pr