Masana'antar hakar ma'adinai ciki har da ma'adinai & ƙarfe (amfanin + smelting) yana da babban buƙatu don bawuloli a ƙarƙashin yanayi mai tsanani a cikin ma'adinai da matakan narkewa.A matsakaici yawanci yana da halaye na manyan barbashi, high taurin, high danko, karfi acid da alkali, da dai sauransu The bawul ya zama lalacewa-resistant, lalata resistant, da kyau kwarai a wurare dabam dabam yi a lokacin da zabi da bawul.HIVAL® ya haɗa da bawul ɗin ƙofar wuƙa, bawul ɗin ƙwallon ƙafa na ƙarfe, bawul ɗin saiti na malam buɗe ido biyu/sauku, waɗanda galibi ana yin su da baƙin ƙarfe, ƙarfe na carbon, bakin karfe, da dai sauransu.