Annual Oyu Tolgoi Mine Visit

Panel block cave development
Highly productive mass mining method
with low operating costs. Substantial
upfront investment and lower operating
costs make block caving suitable for
larger deposits.
Resource recovery is effective as the
low operating costs support economic
extraction of a lower shutoff grade.
Primary blasting is only required on a
small percentage of the orebody, on the
undercut level. Following this, ore is
broken by gravity and flows into
drawbells beneath.
Ore is extracted by load-haul-dump
machines. Oversize rocks that block
drawbells are removed by secondary
breaking.
26