Synonyme wurden verwendet für:
Bergbau
Suche ohne Synonyme:
keywords:(Bergbau)
Linie pradu w przypadku plaskiego ruchu piasku
Switches for underground electric locomotive traction
State provisions for location of lode claims
South African rope and safety-catch commission
Comparison of horse and benzine-locomotive haulage
A means of securing main haulage roads and return airways of a mine otherwise than with timber