Exclusive: Goldcorp struggles with leak at Mexican mine

By Allison Martell, Frank Jack Daniel and Noe Torres TORONTO/MEXICO CITY (Reuters) - Mexican regulators said they are examining whether mining company Goldcorp Inc broke any regulations in its handling of a long-running leak of contaminated water at Mexico's biggest gold mine. Levels of the mineral selenium rose in one groundwater monitoring well near Goldcorp’s Penasquito mine as early as October 2013, Goldcorp data reviewed by Reuters shows. The Canadian company reported a rise in seleni