UPDATE 1 — Union at BHP's Escondida mine in Chile refuses to pause contract talks after fatal accident
(Adds details from BHP statement in paragraphs 4-5, 9) By Fabian Cambero Sept 25 (Reuters) — One of the unions at Chile's Escondida mine, the world's largest copper operation, on Friday rejected BHP's attempt to delay contract talks after a worker was killed in an accident earlier this week. The Australian-based miner,