<br/>In China, about 150 workers were trapped by a flood at a vast coal mine under construction in northern China yesterday, the latest in a long list of accidents in the country's notoriously dangerous mining sector. Water gushed into the Wangjialing mine in Shanxi province as 261 people were at work underground. <br/><br/>President Hu Jintao and Premier Wen Jiabao ordered local authorities to spare no efforts to rescue the missing workers, and Vice Premier Zhang Dejiang rushed to the scene to oversee the operation. <br/><br/>China's coal mines are among the most dangerous in the world, with safety standards often ignored in the quest for profits and the drive to meet surging demand for coal — the source of about 70 percent of China's energy.