Mines
The silver it has agreed to purchase is in Mexico (40%), Portugal (20%), US (10%), Chile (9%), Peru (9%), Argentina (7%), Sweden (4%), Greece and Canada (about 1%).[18] Silver Wheaton doesn't own or operate the mines but the contracts it has with their owners gives it full access to any silver (gold at the Minto Mine) mined there. The six mines from which the company gets most of its silver are : San Dimas, Penasquito, Barrick (made up of five parts), Yauliyacu, Zinkgruvan, Cozamin and Minto. In addition there are six other smaller mines that contribute about 22% of the total.[19]
The San Dimas mine was sold by Goldcorp in the summer of 2010 to Mala Noche Resources Corp. (later renamed Primero Mining) for half a billion dollars complicating things for Silver Wheaton which had already made an agreement with Goldcorp for the silver.[20] In response Silver Wheaton agreed to a new contract agreement.[21] The Penasquito mine which began producing in September 2010 (and has a mine life of 22 years) is Mexico's largest open pit mine.[22][23][24]
The agreement it has with Barrick Gold involves the silver produced at 4 mines; Pascua Lama, Lagunas Norte (Peru), Pierina (Peru) and Veladero (Argentina).[25] The deal involving the Lagunas Norte, Pierina and Veladero mines was made in September 2009, required an initial deposit of $212.2 million, gives Silver Wheaton 100% of the silver produced and ends at the conclusion of 2013.[26] The Pascua-Lama mine (at the border of Chile and Argentina) contract gives Silver Wheaton access to a quarter of the silver produced there from 2013 to 2017 and could raise silver sales by 30%.[26]
Subsidiary Silverstone Resources Corp. owns 100% of the life of mine silver produced at mines in Neves-Corvo and Aljustrel, Portugal. The Lundin Mining owned Neves-Corvo mine located near the Iberian Pyrite Belt is primarily a copper and zinc producer.[27]
Mine 777 in Manitoba belongs to HudBay Minerals. The mine was the source of 62.8% of Silver Wheaton's gold produced in 2012. In the last quarter alone it accounted for 19,615 ounces of gold, more than Silver Wheaton's other gold mine produced over the entire year (18,600 oz). When converted to silver equivalent using the gold to silver ratio, gold from 777 accounted for 40.5% of the increase in total production in 2012.