Directorates of Mining and Geology of Himachal Pradesh, Chhattisgarh and Rajasthan also carried out exploration for limestone. Mineral Exploration Corporation Ltd (MECL) also engaged in exploration of limestone. Details of work carried out by these organisations are given in Table2. LIMEST ONE AND OTHER CALCAREOUS MA TERIALS 323 Table – 1(A) : Reserves/Resour ces of Limestone as on .