Argentina tells Barrick to overhaul Veladero gold mine

By Caroline Stauffer and Susan TaylorBUENOS AIRES/TORONTO (Reuters) - Argentina mining officials told Barrick Gold Corp it must overhaul environmental and operating processes at its Veladero mine, following last week's cyanide solution spill, while the country's environment ministry asked for a total suspension of operations, according to statements on Friday.National and provincial officials told Barrick executives at a Thursday meeting that the Canadian company's ongoing business in the countr