Qalab qodista biyo-xidheenka waa mishiinka saamaynta pneumatic ah, kaas oo inta badan loo isticmaalo barroosinka dhagaxa iyo carrada, dabaqa hoose, daawaynta jiirada, taageerada gunta hoose ee gunta hoose, tunnel ku hareeraysan xasilloonida dhagaxa, ka hortagga dhul-goynta
Sii akhri