Ukusebenza kakuhle kwe-drilling ye-open-pit DTH i-drilling rig iphantsi kuneyombhobho we-hammer drilling rig, kodwa ukusebenza kwe-DTH drilling rig iyona nto ibhetele kakhulu phantsi kweemfuno zobubanzi obukhulu kunye nobunzulu obungaphezu kweemitha ezingama-30. Ukuba ulandela izibonelelo zoqoqosho, ndicebisa ukuba ukhethe i-rig yokomba eyohluliweyo. Ukuba ulandela ukusebenza kakuhle kunye nokhuseleko lomsebenzi, ndicebisa ukuba uthenge i-rig edibeneyo yokomba. Siza kwenza esona sicwangciso sibalaseleyo sokomba ilitye ngokweemfuno zakho.