Acid plant blast: Mount Isa residents emerge - Brisbane Times Brisbane Times Police have given Mount Isa residents the all clear to venture outside again, after a chemical explosion at an acid plant brought the northwest Queensland town to a standstill. Mount Isa's 21,000 residents were instructed to remain inside with their doors and ... Probe continues into Mount Isa acid plant blast Incitec Pivot tank explosion Mount Isa in lockdown after explosion in acid tank |