The decision followed the meeting of four trade unions operating in CIl and SCC in Ranchi, Jharkhand Wednese. Congress-backed Indian National Mineworkers Federation (INMFW), Hind Khadan Mazdoor Federation, AITUC controlled Indian Mine Woday. Post the meeting, the left-backed All India Coal Workers Federation (AICWF) has extended its support to the scheduled strikrkers' Federation and the coal workers' union of Bharatiya Mazdoor Sangh apart from left-backed AICWF will be participating in the strike which will involve over seven lakh of the labour force.