Kodwa kubhaka, kukhona amathooli namamashini amaningi. Umshini omuhle wamanje ngu-DTH rig, okusho ukuthi "down-the-hole" rig. Le rig esihlukanisiyo isetshenziselwa ukubhaka ngaphezu kwezinyawo. Isebenza ngokusebenzisa ihamma elishaya i-drill bit. Lokhu kwenza ubuso kwezinyawo, okuyisisekelo sokwenzela izinhloso eziningi njengezokweminingi, ukwakha, noma ukuthola amanzi. KwaMazellion, sithembeka ukuthi sifakela ama-DTH rigs awaphakeme ukuthi abhekene nokubhaka ngokuphelele nokuphelele. Ngama-rigs ethu, abasebenzi bakhwanda ngaphezu kwezinyawo futhi bakhwanda ngokushesha, bekunciphisa isikhathi nendlela yokulungisa. Isibonelo, si I-Rod yokubhala ngokwesikhumba (DTH) ye-ZD-89, 89mm, yasezindaweni zokubhala izizinda zemfula nezokubhala ngokwesikhumba (DTH) kunikeza ukusebenza okuhle kubizomzimba wokukhupha.
Ukukhetha indawo yokukhupha ekuhambelweni kwakho kungakwazi. Okokuqala, kufanele ubeke isibonelo sokusebenza oziyakwenza. Iziprojekthi ezihlukene zidinga izindawo ezihlukene. Isibonelo, uma uzokhupha emaphanjini amakhulu, kufanele ungena endaweni enkulu enokwenzela lokho ubunzima bezinye. Ngamanye amazwi, uma uzokhupha emhlabeni ohlehlile, indawo encane ingathakathi. Kufanele ubeke phakathi kwezintfo zokukhupha. Indawo enkulu ingakhupha izikhumba ezinkulu, kodwa ingayikwazi ukuthi yisikhathi esikhulu sokususa. Izindawo ezincane zingafanelwa ngokushesha kodwa mayelwe akasenzi ukusebenza okuhle.