A gas explosion that killed at least 82 people in central China – the country’s worst mining disaster in more than a decade – was the result of systemic safety failures across multiple parts of the production chain, according to miners and industry insiders. The Friday blast at the Liushenyu Coal Mine in Shanxi province also left two people missing and 128 survivors in hospital, including two in critical condition. Miners interviewed by the South China Morning Post said several workers had not..