Bọtịnụ carbide cemented nwere ọrụ ha pụrụ iche na-arụ ọrụ, ya mere a na-eji ya eme ihe n'ọtụtụ ebe na-egwupụta mmanụ na shọvel snoo, igwe na-akụ snow na akụrụngwa ndị ọzọ.
N'otu oge ahụ, a na-ejikwa ya maka ngwá ọrụ ndị na-egwupụta ihe na-egwupụta ihe, ngwá ọrụ ndị na-egwuputa ihe na ikpochapụ snow na ngwá ọrụ na-edozi okporo ụzọ.Ngwa ndị a na-eji n'ịgbawa okwute, igwu ala, injinia ọwara, na iwu obodo.