Oil prices plunged to levels not seen in more than a decade on Thursday, hammered by the continuing turmoil in China , the world’s second biggest oil consumer. China’s stock market tumbled and suffered its shortest trading day in its 25-year history, dragging down bourses around the world . That added to concerns about its crude demand at a time of continuing global glut of the commodity. Brent crude, the global oil benchmark, fell 2.8% to $33.30 a barrel on London’s ICE Futures exchange. Earlier in the session, it fell to as low as $32.16 a barrel, its lowest price since April 2004. On the New York Mercantile Exchange, West Texas Intermediate futures were trading down 3.3% at $32.83 a barrel. Earlier, WTI slid to $32.10 a barrel, the lowest level since December 2003. Chinese markets stopped trading about 30 minutes after they opened, as a newly installed mechanism […]