Ilitye lentaba-mlilo iPumice (eyaziwa ngokuba yi-pumice okanye i-poralt basalt) luhlobo lwezinto ezisebenzayo zokukhusela indalo. Lilitye elixabiseke kakhulu elenziwe yiglasi yentaba-mlilo, izimbiwa kunye namaqamza emva kogqabhuko-dubulo lwentaba-mlilo. Ilitye lentaba-mlilo liqulathe uninzi lwezimbiwa kunye nezinto ezilanda umkhondo, ezinje nge-sodium, magnesium, aluminium, silicon, calcium, titanium, manganese, iron, nickel, cobalt kunye ne molybdenum. Ine-infrared wave magnetic ngaphandle kwemitha, Emva kwamawaka eminyaka, abantu balifumene ixabiso lalo ngakumbi nangakumbi. Ngoku yandisiwe kwimimandla yolwakhiwo, ukugcina amanzi, ukugaya, izinto zokucoca ulwelo, i-barbecue charcoal, i-garden landscaping, ukulima ngaphandle komhlaba, iimveliso zemihombiso njalo njalo. Idlala indima engenakuphinda ibuyiswe kuzo zonke iinkalo zobomi! Iliwa elishushu lokubhaka umva luhlobo lonyango lwamatye, olusebenzisa amatye ashushu e-volcanic ukufunxa amandla amabi omzimba womntu, ukunceda umzimba womntu ukuphelisa ityhefu kunye nokukhuthaza ukutya komzimba.