Mining has an image problem. In developing and developed countries alike, the public tends to regard the industry as dirty, dangerous and disruptive...But as gold, copper and other metals hit their highest prices for many years, and the power generation industry is poised for a big shift from gas to coal, the imperative to challenge that caricature is becoming more urgent. [refers to Monterrico Metals, Newmont, AngloGold Ashanti, Rio Tinto]