G9138F bụ ngwa-ngwa dị elu, arụmọrụ dị elu, nkenke dị elu na ngwaahịa dịgasị iche iche nke SDLG mepụtara mgbe nyocha zuru oke nke ahịa chọrọ, nke nwere ike mezue ọkwa ala na trenching, mkpọda mkpọda, mkpọda, mwepu snow, ịtọpụ, compaction, nkesa ihe, ịgwakọta. , wdg, a na-ejikwa ya n'okporo ụzọ awara awara, ọdụ ụgbọ elu, injinia nchekwa, ihe owuwu ogbunigwe, owuwu okporo ụzọ, iwu nchekwa mmiri, ndozi ala ubi na ọnọdụ ihe owuwu ndị ọzọ.