Major Mines Projects | GudaiDarri (Koodaideri) Project
22/06/2021 · All of Hamersley Iron's mines are conventional open pits using track and shovel mining method with preliminary drilling and blasting. The drill holes are filled with an explosive, most often ANFO (Ammonium Nitrate/Fuel Oil) and then charged. The resulting blast breaks the material to a size required for digging.