Mwala wa phiri lophulika Pumice (wodziwika bwino kuti pumice kapena basalt woboola) ndi mtundu wa zinthu zoteteza chilengedwe. Ndi mwala wamtengo wapatali kwambiri wokhala ndi mabowo opangidwa ndi galasi la phiri lophulika, mchere ndi thovu pambuyo poti phiri lophulika. Mwala wa phirilo uli ndi mchere wambiri ndi zinthu zina, monga sodium, magnesium, aluminiyamu, silicon, calcium, titaniyamu, manganese, chitsulo, nickel, cobalt ndi molybdenum. Uli ndi mafunde a maginito a infrared opanda kuwala kwa dzuwa. Patatha zaka zikwi zambiri, anthu apeza kufunika kwake kochulukirachulukira. Tsopano wafalikira m'magawo omanga, kusamalira madzi, kugaya, zida zosefera, makala a barbecue, kukongoletsa minda, kulima popanda dothi, zinthu zokongoletsera ndi zina zotero. Umagwira ntchito yofunika kwambiri m'mbali zonse za moyo! Hot rock baking back ndi mtundu wa mankhwala a miyala, omwe amagwiritsa ntchito miyala ya phiri lophulika kuti atenge mphamvu zoyipa m'thupi la munthu, kuthandiza thupi la munthu kuchotsa poizoni ndikulimbikitsa kagayidwe kachakudya ka anthu.