Ubuchwepheshe
Uchungechunge lwekhabhoni ecushiwe lwenziwa ngamalahle ekhwalithi ephezulu akhethwe ngokuqinile namalahle ahlanganisiwe. Ukuxuba impushana yamalahle netiyela namanzi, ukukhishwa kwezinto ezixubile ku-Columnar ngaphansi kwengcindezi yamafutha, kulandelwa i-carbonization, activation kanye ne-oxidation.