Lilemong tsa morao tjena, fiber ea basalt e hlahile e le thepa ea motheo, e hapang tlhokomelo ea liindasteri lefatšeng ka bophara. E tsoa ho lejoe la basalt le entsoeng ka ho qhibilihisoa, fiber ena e ncha e ithorisa ka thepa e ikhethang, ho kenyelletsa le matla a phahameng a ho tsitsa, botsitso ba mocheso le ho hanyetsa ho bola. Ka lebaka leo, ts'ebeliso ea eona e akaretsa likarolo tse fapaneng, ho tloha ho tsa kaho le tsa makoloi ho isa sebakeng sa sefofane le boenjiniere ba tikoloho. Kajeno, re hlahloba bokhoni ba phetoho ea fiber ea basalt le bokamoso ba eona bo ts'episang ho bopa liindasteri tsa sejoale-joale.