( 1. ) THESE 54 petitioners, working as daily rated employees, have filed this petition for regularisation of their services. Respondent No. 1, National Mineral Development. Corporation Ltd. is a Government company registered under the Companies Act. It is wholly owned and controlled by the Government of India. The company has establishments at various places, including Bailadila Iron Ore Project, Diamond Mining Project, Panna and Donimalai Iron Ore Project, Karnataka. About 10 Trade Unions are functioning in these projects. All these Unions have formed themselves into a federation, called "all India NMDC Workers Federation". Respondent No. 2, Diamond Mining Project, Panna is one of the establishments of Respondent No. 1 and is engaged in mining and processing of diamond by open cast system, with the development of earth moving machineries. Diamond bearing rock is processed in an ore dressing plant through the system of crushing, grinding and winning of diamond with gravity concentration. Prior to 1981, the project was operating two mines at Ramkheria and Majhgawan. Due to uneconomical operations, Ramkheria mine was closed on 16-1-1981 and 68 of its regular and 25 daily r