Emkhakheni wokwakha izisekelo ezijulile kanye nezezimayini, ama-hammer e-DTH kanye nezinsiza (ububanzi obukhulu) zivelaphi njengengxenye ebalulekile yokusebenza okuhle nokusebenza kahle kokuhamba. Lezi zinsiza ezikhethekile ziklanyelwe ukuhlinzeka ngokuqhubekayo kwemithombo emikhulu, okubalulekile ezinhlelweni ezihlukahlukene zokwakha njengokuphy.phila, ukuthuthukisa umhlaba, kanye nokuzinzisa umhlabathi. Ukwamukela i-hammer ye-DTH (down-the-hole) kuvumela ukufaka amandla aphezulu ngokushesha kumthombo wokuhamba, okwenza kube lula ukuhamba ngokushesha ezindaweni zegeology eziyinkimbinkimbi. Le ndlela ikakhulukazi iyasiza lapho kuhlangana nezindonga eziqinile noma izimo zomhlabathi ezibanzi, okwenza kube ukukhethwa okuphakeme kumaphrojekthi ezisekelo ezijulile. Ngokwendlela, ama-hammer e-DTH asebenza ngokuletha ukuhamba okukhulu, ophindaphindayo kumthombo, oqondiswa ekugcineni komugqa wokuhamba. Njengoba umoya ophansi ufakwa ku-hammer, ivula uphondo olushaya umthombo, kwakha umthelela ophindaphindwayo ophula izinto ezingaphansi. Le ndawo yokuhamba ephumelelayo inciphisa ubungozi bokuphuka komthombo futhi ithuthukisa ijubane lokuhamba jikelele. Ama-hammer anobubanzi obukhulu aklanyelwe ngokukhethekile ukuze abhekane nemikhono emikhulu, ngokuvamile evamise ukusuka ku-6 inches ukuya ngaphaya kuka-36 inches, ngaleyondlela ivumela ukufakwa kwezimpahla ezinkulu zokwakha ezifana nezinsika nezikhumbuzo. Izicelo ezibalulekile zama-hammer e-DTH anobubanzi obukhulu nezinsiza zitholakala ezindaweni ezihlukahlukene zomkhakha wokwakha kanye nezezimayini. Lezi zinsiza zibalulekile ekwakheni izisekelo ezijulile ezidingekayo kubakhuni abangabakhudlwana, ogwini, kanye nezinhlelo zokwakha. Zibuye zibe nesikhumbuzo esibalulekile kumasu okuthuthukisa umhlaba, njengokunamathela komhlabathi nokuphakela, okwandisa amandla okuphathela umhlaba okukhona. I-versatility yama-DTH systems iyenza ifanele izimo ezihlukahlukene zegeology, ukusuka kumhlabathi ophambene kuya ezifundeni eziqinile, ngaleyondlela ikhulisa ukufaneleka kwazo ezicini eziningi zokwakha. Ngesikhathi sokukhetha ama-hammer e-DTH kanye nezinsiza, iz specification kanye nezimfuneko ezithile kufanele zicatshangelwe ukuze kuqinisekiswe ukukhiqiza okufanele. Izici ezibalulekile zifaka ububanzi be-hammer, ukukhipha amandla, kanye nohlobo lomthombo (olungaklanyelwa ezindaweni ezithile). Ngaphezu kwalokho, impahla kanye nesakhiwo sokuhamba ngokwalo kuthinta impilo nokuqhubeka. Kubalulekile ukuvumelanisa imishini nezidingo ezithile zomqondo wokuhamba, kuhlanganise nezimo ezilindelekile zomhlaba, ukujula, kanye nobubanzi bokuhamba. Ukukhetha i-hammer efanele ye-DTH nezinsiza kubalulekile empumelelweni yephrojekthi ekwakheni izisekelo ezijulile kanye nezezimayini. Ngokwazi izindlela, izicelo, nezimfuneko zalesi sikhali, ochwepheshe bangathatha izinqumo ezihlakaniphile ezithuthukisa ukukhiqiza futhi zehlise izindleko zokusebenza. Nokho uma kukhishwa noma ukuqashwa, ukufinyelela ama-hammer e-DTH aphakeme kanye nezinsiza kubalulekile kubakhi abaphakathi ngoba behlose ukuthuthukisa amaphrojekthi ezisekelo ezijulile ezimeni ezidingekayo zokuziqhenya.