1. I-chassis yenzelwe i-excavator yoomatshini abanzima, i-drilling rig, njalo njalo.
2. Zonke ii-roller zenziwe ngentsimbi ye-alloy, ngokuhambelana ngokungqongqo kunye neemfuno zenkqubo, kwaye emva kokucima unyango, ukuchasana kakuhle kokugqoka, ubomi benkonzo ende.
3. Iirola ezine ziyindibano elungileyo yokuqinisekisa ukuthwala umthwalo, umphezulu wokudityaniswa yonke into icutshungulwa, ukukhethwa kwesixhobo soxinzelelo ukuqinisekisa ukuba mkhulu kuneemfuno zomthwalo womthengi.