Advertisement
Pyhasalmi
---------------------------------------------------------------------------- three months ended December 31 2012 2011 change----------------------------------------------------------------------------Tonnes of ore milled (000's) 351 348 +1%Tonnes of ore milled per day 3,800 3,800 +1%----------------------------------------------------------------------------Grades (percent) copper 1.0 1.1 -9% zinc 3.0 2.1 +43% sulphur 41 43 -5%----------------------------------------------------------------------------Mill recoveries (percent) copper 97 95 +2% zinc 93 90 +3%----------------------------------------------------------------------------Production (tonnes) copper 3,300 3,500 -6% zinc 9,700 6,600 +47% pyrite 222,500 210,500 +6%----------------------------------------------------------------------------Cost per tonne of ore milled $47 $41 +15%-------------------------------------------------------------------------------------------------------------------------------------------------------- year ended December 31 2012 2011 change----------------------------------------------------------------------------Tonnes of ore milled (000's) 1,384 1,386 -Tonnes of ore milled per day 3,800 3,800 -----------------------------------------------------------------------------Grades (percent) copper 1.0 1.1 -9% zinc 2.0 2.6 -23% sulphur 42 42 -----------------------------------------------------------------------------Mill recoveries (percent) copper 96 96 - zinc 92 91 +1%----------------------------------------------------------------------------Production (tonnes) copper 12,600 14,000 -10% zinc 25,600 32,300 -21% pyrite 891,700 804,900 +11%----------------------------------------------------------------------------Cost per tonne of ore milled $43 $41 +5%----------------------------------------------------------------------------
Lower grades this year in-line with annual objectives
Pyhasalmi continued its strong performance in 2012, processing 1.4 million tonnes of ore and achieving copper recoveries of 96 percent and zinc recoveries of 92 percent. Backfill supply was reliable and the underground open void volume was maintained below planned levels.
Both copper and zinc production were at the high end of our guidance range but lower than in 2011, as expected, because of lower grades in the areas we mined. A record 891,700 tonnes of pyrite concentrate was produced this year to meet higher customer demand.
