Timeline of deaths at Shaanzi mining company.
October 2018: An underground cleaner dies after a machine smashed his chest inside a mining pit.
April 2017: Seven illegal miners die after being trapped by smoke
January 2016: An employee of the company die after he was buried under a pile of gold ore.
April 2015:  Two miners die and eight critically injured from poisonous gas explosive.
April 2, 2014: Two miners were allegedly gassed to death and one severely injured.
October 2014: Three miners lost their lives when a mining pit collapsed on them.
May 26, 2013: Three illegal small-scale miners perish in a tunnel following an explosion.