Mashiinnada calaamadaynta laysarka ee kala duwan ayaa loo isticmaalaa miiska shaqada. Ku qalabaysan miiska rotary station multi station, waxaa lagu dabaqi karaa alaabada birta yar yar ee kala duwan iyo kuwa aan biraha ahayn. Waxay xaqiijin kartaa quudinta tooska ah, habaynta joogtada ah iyo waxqabadka qiimaha sare leh.
