(Reuters) -Warren Buffett’s Berkshire Hathaway (NYSE: BRKa) on Saturday took a $3.76 billion writedown on its stake in Kraft Heinz (NASDAQ: KHC ), an acknowledgment the decade-old investment hasn’t ...

SANTIAGO (Reuters) -Chilean copper miner Codelco said on Saturday it has cleared just over a fifth of the blocked underground tunnels needed to reach trapped workers at its flagship El Teniente mine, ...