1.K.Ranjagam 2.S.S.Ramasamy 3.B.Namakshivayam 4.S.P.Vishwanathan 5.K.R.Kanagaraj 6.K.R.Vellaichamy 7.K.R.Shanmuganathan ... Petitioners Vs. 1.The Director of Geology and Mining O/o. The Director of Geology and Mining, Alandur Road, Guindy Industrial Estate, Guindy, Chennai-32. 2.The Commissioner, Department of Geology and Mining, Thiru Vi.Ka.Industrial Estate, Guindy, Chennai-32. 3.The Assistant Director of Geology and Mining O/o. The Assistant Director of Geology and Mining, Collectorate Campus, Sivagangai District. 4.The District Collector, Sivagangai District, Sivagangai. 5.The Superintendent of Police, Sivagangai District, Sivagangai. 6.The Public Works Department, rep. By its Executive Engineer, Devakottai Taluk, Sivagangai District. 7.K.Karthikeyan ... Respondents