<a href="https://en.wikipedia.org/wiki/Hōjō_Coal_Mine_Disaster" id="mw0g" rel="mw:WikiLink" title="Hōjō Coal Mine Disaster">A gas explosion</a> at <a href="https://en.wikipedia.org/wiki/Mitsubishi" id="mw0w" rel="mw:WikiLink" title="Mitsubishi">Mitsubishi</a> Hōjō coal mine, in <a href="https://en.wikipedia.org/wiki/Kyushu" id="mw1A" rel="mw:WikiLink" title="Kyushu">Kyushu</a>, Japan, kills 687.