4 dead, 5 trapped in Liaoning colliery roof collapse Medical staffs wait on an ambulance in Qingshuitai township of Shenyang, capital of n...

4 dead, 5 trapped in Liaoning colliery roof collapse

Medical staffs wait on an ambulance in Qingshuitai township of Shenyang, capital of northeast China's Liaoning Province, May 21, 2012.

A coal miner walks out of the entrance of the colliery in Qingshuitai township of Shenyang, capital of northeast China's Liaoning Province.(Xinhua/Yang Qing)

Coal miners walk out of the entrance of the colliery in Qingshuitai township of Shenyang, capital of northeast China's Liaoning Province.(Xinhua/Yang Qing)

Ambulances wait outside colliery in Qingshuitai township of Shenyang, capital of northeast China's Liaoning Province, May 21, 2012.(Xinhua/Yang Qing)

Photo taken on May 21, 2012 shows the colliery in Qingshuitai township of Shenyang, capital of northeast China's Liaoning Province.(Xinhua/Yang Qing)

Four people died and another five were trapped following a roof collapse in a colliery in Qingshuitai township of Shenyang, capital of northeast China's Liaoning Province.

Twelve miners were working in a shaft when the accident happened at 11 a.m. Sunday in the Qingshui No. 2 Colliery. By 11 a.m. Monday, three people had been lifted out of the debris, and rescue work was still underway.