I missed the field trip to Asarco's Mission Mine [right, credit, Asarco] last Saturday but AZGS Phoenix chief Nyal Niemuth was there and provided some updates.
Reserves of 334M tons grading 0.442%
Cu and 0.009% Mo with a 1.47 strip ratio were reported, which will
provide a 16 year mine life. A $22M capital improvement spending program
is underway this year that will include 5 new trucks. Eventually all
the haul truck fleet will be 320 ton Komatsu 930E models, that will require
bigger loaders also. A $60M expenditure has been approved to expand the
South mill and refurbish the Mo circuit. Mo production should restart in
spring 2013 and produce 48K lb/month. A third of the trip was visiting
reclamation of 5,124 acres of tailings and dumps in the northern part of
the property into sustainable Sonoran desert vegetation.
"Dinossauros do Gobi" no Porto por Mark Norell
10 hours ago