A decades long battle against Taseko Mines Ltd. (TSX:TKO) and its $1.5 billion New Prosperity copper mine is over, say the Tsilhqot'in First Nation, which pronounced the project dead, following a Supreme Court of Canada rejection of an appeal by the company. "This decision has been a long time coming," said Tsilhqot'in Chief Joe Alphonse in a press release this morning."We are celebrating the Supreme Court of Canada's decision today, and taking the time to reflect on the immense sacrifices made by our communities and members to finally have their voices heard and respected.