Mining’s old guard needs strong medicine
A new report details subpar investor returns in the mining industry over the last decade, particularly big cap diversified companies which have not adapted to new realities.
* Gold tumbles, erasing gains as euro hits 2-year low * Worries about Spain keep euro zone tensions high * US futures volume near 2012 high on month-end trading * Coming up: U.S. March pending home sales Wednesday (Recasts, updates comments, market…