Kagwiritsidwe ntchito ka ma bulldozers apakati ndi ang'onoang'ono okwera pamahatchi pamsika waku US ndizosiyana kwambiri ndi zomwe zili pamsika wapakhomo.Pomwe ntchito za bulldozer zapakhomo nthawi zambiri zimakhala zoyendera pansi, ma bulldozers ang'onoang'ono ndi ang'onoang'ono pamsika waku US amagwiritsidwa ntchito kwambiri pakuwongolera, zomwe zimakulitsa zofunikira pakukhazikika kwa makina (monga kusanja ndi kugwedezeka) komanso kuwongolera kwamasamba.5#DH13K2 imagwiritsidwa ntchito polumikizana ndi makampani apamwamba kwambiri padziko lonse lapansi, kuphatikiza CAT ndi Komatsu, m'malo angapo aboma omanga misewu ndi nthaka ku US.
