| |||
drilling rig | |||
bore rod; boring bar; bull rod | |||
boring rod; drill rod; drill steel; drill-steel set; H rod (mit 3.5 in. Außendurchmesser); rotary-drill pipe; stem | |||
drill pipe | |||
| |||
jointed steel (Langlochbohren); sectional steel (Langlochbohren) |
Bohrgestänge: 44 phrases in 4 subjects |
Coal | 1 |
Drilling | 3 |
Metallurgy | 3 |
Mining | 37 |