Ho theosa le lesoba dth cheka hamore bit moetsi

1.Bophelo bo bolelele ba ho cheka: lisebelisoa tsa alloy, tse nang le bophelo bo bolelele ho feta lihlahisoa tse tšoanang;

2.Tlhahiso e Phahameng ea Dilling: likonopo tsa ho cheka ha li sebetse, e le hore mochine o ka lula o le bohale ka tsela eo e ntlafatsa haholo lebelo la drllng.

3.Lebelo la ho phunya le tsitsitse: mothapo oa hohloa ebe oa sehoa ho pshatla lefika.

4.Ts'ebetso e Ntle: Bit e Ncha ea Diamond e na le khanyetso e matla ea ho apara, tšireletso e ntle ea Diameter mme e ka etsa hore meno a ho itšeha a sebelisoe hantle.

5. Ts'ebeliso ea mefuta e mengata e fapaneng: tloaelo e paka hore karoloana e loketse lejoe la carbonate, limestone, choko, lejoe la letsopa, siltstone, sandstone le tse ling tse bonolo le tse thata (9-grade drillability of rock, hard rock drling), ka bit e tloaelehileng, haholo-holo ho cheka lejoeng la sehlopha sa 6-8 phello e bohlokoa haholo.