Drilling Of 15 (Fifteen) Nos. Nx Size Underground Non-Coring Bore Hole Up To Depth Of Average 6.30 Meter Each Bore Hole From Sp Top Seam To Sp Middle Seam For Parting Proves As Per Provision Of Permission From Dgms For Sp Top Seam & 10 Nos. In Bp Seam For A Depth Average 8.0 Meter For Scope Of Contiguous Working Below Bp Seam Top Section As Per Discussion With Dgms At Hariajam Colliery.