The four miners created a living space of six to eight square meters underground.
Continuous cave-ins in which tons of rocks fell down twisted the pit shaft and blocked the tunnels that could lead rescuers to the trapped miners.
Several leaders of Pingyi county, Shandong province, were dismissed in connection with a mine collapse that occurred in the county on Friday.
Government of East China's Shandong province has ordered gypsum mines to suspend operations for safety checks on Sunday, after a gypsum mine collapsed on Friday with one person known to have died and another 17 still trapped.
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