METALS-Copper edges higher for second day amid market tightness

London copper prices rose for a second day on Monday, as concerns over supply tightness outweighed weak U.S. manufacturing data and a jump in London Metal Exchange inventories. LME copper stocks surged 67 percent over Thursday and Friday to 186,425 tonnes after hovering at decade-lows for the first half of this month. But supply concerns for some metals, including copper, could wid