A life-saving mine safety capsule that can provide emergency shelter for trapped miners has cleared stability tests in Xi’an, Shaanxi province, China.

The capsule can provide shelter for 12 people for 120 hours during emergency conditions and protect them from blasts and toxic gas, allowing time for rescue, according to Xinhuanet.

Developed by Dongfeng Instrument Factory, the capsule is 6.96m long, 1.78m wide and 1.74m high.

Dongfeng project team leader Ma Jianhua said the capsule can provide food, water and oxygen to miners.

“Miners can also use it to communicate and use its surveillance systems to guide rescuers down the shaft,” Jianhua said.

In August 2010, the State Administration of Work Safety and the State Administration of Coal Mine Safety instructed coal mines in China to build and improve underground emergency shelter systems by June 2013.