Front-month U.S. natural gas futures extended gains early Thursday despite a government report that showed total domestic gas inventories climbed to an all-time high last week. The U.S. Energy Information Administration report showed total domestic gas inventories rose last week by 19 billion cubic feet to a record high of 3.85 trillion cubic feet, eclipsing the previous record of 3.84 tcf hit in November 2010. Traders and analysts polled by Reuters had expected a 26 bcf build. [ID:nPRWPI54] At 10:31 a.m. EST (1531 GMT), the NYMEX front-month gas futures contract NGc1 was up 13.5 cents, or 4 percent, at $3.479 per ... (full story)