Korean stocks opened mildly lower Friday, despite overnight gains on Wall Street. After opening 0.47 percent lower, the benchmark Korea Composite Stock Price Index (KOSPI) fell 10.17 points, or 0.15 percent, to 6,961.18 as of 9:15 a.m. Overnight, U.S. stocks finished modestly higher as benchmark Treasury yields eased from fresh multi-decade highs, although gains were capped by rising crude oil prices. The Dow Jones Industrial Average rose 0.04 p…