Ukuphakamiswa kakhulu kwezilimi ezincinane zicalo nokusetyenziswa
Ukungcola kwezinkorosi ephakeme kwezinkawuntula eziningi ezobisiweyo kunguqo lokuqala oluhlelwa ngalo, kubangela ukuthi zingaphandle kwezindawo zematerials yempi. Le ngxenye enkulu le nca yisukela kwezifundo ephakeme zokuthiwa kwezinhlobo ephindaphindayo esetshenziswa kusayithi, ekunikeza ukuphepha okungapheliwa kuzinhlobo zokungcola. Uma kuthathwa kwezimala, amanzi noma izinhlelo zokuchitha, le nhlaka yekhemi iyaphindela futhi uma ikhishwe, ekunikeza ukuphepha okuphelele kusukela kusayithi. Le ukungcola okunguqo kuthula inqubo yokunquma izinhlelo zokuphepha noma izinhlobo, ekuthula izindleko zokuqala nezokuphila ngenxa yokuthula ukusebenza ngokude. Inca yomaterial ukuthiwa nezinhlobo ezinhambelene, kanye namachlorides, amachewcali, nezinhlelo zokungcola, kuyindlela enkululekile kuzindlela zokuchitha, ezindaweni zasemani, nezindaweni eziphakeme kwezilwane.