The Bolivian government sent in hundreds of police Friday to try to quell a deadly clash between rival bands of miners who hurled dynamite and homemade explosives at each other in a battle over one of South America's richest tin mines. At least 11 people have been killed and more than 50 wounded since the fighting broke out Thursday between independent miners' cooperatives allied with President Evo Morales and miners employed by Bolivia's state mining company. A truce on Thursday night lasted long enough for both sides to bury their dead. At dawn on Friday, hostilities again broke out on...