
New milestones in Grasberg underground move
Jul 01, 2019 · In June, at the DMLZ underground mine, loed east of the Grasberg orebody and below the Deep Ore Zone (DOZ) mine, undercutting commenced on the second production block to establish two large blocks for ore extraction. In 2022, PTFI expects to produce from three blocks in mine, spanning 200,000m 2.