A worker collects a sample of crude oil for quality control purposes at a testing facility. (Photographer: Oliver Bunic/Bloomberg)

Oil Caps Best Quarter in Decade as Siberia to Shale Cut Drilling

(Bloomberg) -- Oil closed above $60 for the first time since early November, capping its best quarter since 2009, amid signs of thinning supplies from Siberia to the U.S. shale fields.