Ranchi, Feb. 3: Jharkhand is likely to join hands with three private companies to develop as many coal blocks in Ramgarh and Bokaro districts, a move that is expected to shore up revenues and boost industry confidence in the state. Joint ventures, or JVs, are likely to be inked with Jindal Steel & Power Limited (JSPL), Adhunik Group and AMR Coastal Limited for mining and developing the coal blocks of Rabodh, Patratu and Pindra-Debipur allocated to Jharkhand State Mineral Development Corporation (JSMDC) by the Centre between 2006 and 2008.