Oil prices slipped a second day on Thursday, with Brent edging down further from the $70 mark after weekly U.S. oil data showed a surprise build in crude inventories and record production. Brent futures were down 3 cents at $69.28 a barrel by 0603 GMT. Brent fell 6 cents on Wednesday, after touching $69.96, highest since Nov. 12, when it last traded above $70. U.S. West Texas Intermediate (WTI) crude fell 8 cents, or 0.1 percent, to $62.38 a barrel. The contract dropped 12 cents in the previous session after briefly hitting $62.99, also the highest since November. Global benchmark Brent has gained nearly 30 percent this year, while WTI has gained nearly 40 percent. Prices have been underpinned by tightening global supplies and signs […]