At least 27 Chinese miners were missing in two separate accidents concealed by mine owners in northeastern Heilongjiang province, AP quoted a state-run news agency as reporting Wednesday. Xinhua News agency said 14 of the miners were missing after a cave-in at the Jianbao Coal Mine on Feb. 28 in Jixi city. The mine's manager initially reported only two men were trapped underground, but local authorities began investigations after residents reported more men had gone missing. Rescuers reportedly pumped out 80,000 cubic meters (105,000 cubic yards) of water, but none of the missing workers have been found. In a separate accident at the Taiyuan Coal Mine in Hegang City, 43 men were trapped when the mine caught fire on March 5. Thirty were rescued but 13 others remain missing. The mine owner originally reported everyone was safe. The missing men were almost certainly dead because of the build up of carbon monoxide gas, Xinhua quoted rescue workers as saying.