BofA-ML estimates that the average all-in cost for the industry was up 19 percent from the previous year to $1,081 an ounce during the first quarter of 2011. The increase is largely due to rising fuel prices, higher labor costs, increased regulatory expenses and declining ore grades.
http://www.istockanalyst.com/article/viewarticlepaged/articleid/5297439/pageid/1
Tyhee's $541/oz (PF, 2010)