By Reuters Staff 2 Min Read SAO PAULO (Reuters) - Brazilian miner Vale said in a securities filing on Tuesday it will suspend operations at its Sudbury, Canada nickel mine, after its proposal for a five-year contract was rejected by the United Steelworkers union. United Steelworkers Local 6500, which represents 2,600 workers at the mine, said in a statement that 70% of those who voted were opposed to the Vale offer and wanted the union - whose bargaining committee had recommended the preliminary deal - to return to the bargaining table. “What we have is a clear message from our membership that our bargaining team ... has taken back to the company,” said Kevin Boyd, vice president at USW Local 6500, adding that talks are ongoing.