Drilling of nx-size underground non-coring bore hole up to a depth of average 6.30 meter each bore hole from sp top seam to sp middle seam for parting proves purpose through 27/28th incline of hariajam colliery due to contiguous working development s

Drilling of 1 vertical bore hole from surface to 1 dip in between 2l to 3l in dishergarh r-iv seam of ningha colliery

03 (three) nos drilling nx size non-coring horizontal bore hole in present working district of bp seam (top) to prove the parting waterlogged working of bp seam (top) worked by badjna colliery towards west side boundary between hariajam colliery and

Cleaning of jammed bore hole from surface to rviii bottom seam and lowering 150mm dia stowing pipe upto 140m after cutting of worn out pipe from bore hole located at nilkantha temple sand bunker of khandra colliery

One time roof heightening widening and roof supporting along plus 2wl from 50d to 51d for installation of belt at cm i district in rv seam at mic unit of jhanjra project colliery

Proposal for 01 no nx size coring bore hole at roof and 01 no nx size coring bore hole in riv seam at mic unit jhanjra project colliery

Drivage in floor to making uniform grant in soft stone from 47d to 48ad along minus 3l for muv route in rv seam at mic unit of jhanjra project colliery

Proposal for 03 nos 8 inch dia downward dewatering vertical bore hole from rvi seam to rv seam at mic unit jpc

Drilling of nx-size underground non-coring bore hole up to a depth of average 6.30 meter each bore hole from sp top seam to sp middle seam for parting proves purpose through 27/28th incline of hariajam colliery due to contiguous working development s

Drilling of 16 inch dia 01 no non coring pumping borehole from surface to rv seam at mic unit jhanjra project colliery