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 6 nos dewatering underground bore hole 100mm dia in coal bearing strata by burnside apparatus from rvii a seam to caved panel in r vii seam at jhanjra project 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

Drilling of vertical bore hole in 6 inch dia from g.p. seam to sp combine seam for dewatering of s.p. combine seam through 12 level travelling roadway in g.p. seam of bl incline at kumardhubi colliery.

Roof bolting job in drift b sp middle seam to bp top seam up to - 1st level through 27/28 no. incline of hariajam colliery.

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 4 no nx size coring borehole from b.p. bottom seam to ascertain the actual parting and prove the thickness of kalimati seam at kumardhubi colliery.

Floor soft stone cutting by electrical and pneumatic drilling at sp top seam from 8th dip/rise junction/22 east level to 19th dip/rise junction/22 east level of 27/28th no. incline for loading point and feeding line purpose at hariajam colliery.

Drilling of 01 no 16 inch dia 400mm non coring water supplying bore hole from surface to rvi seam in between 48d minus4bl and minus 4cl for development of rv seam at mic unit of jhanjra project colliery

Drilling of 16 inch dia 01 no non coring pumping bore hole from surface to rviia seam at 3 and 4 incline unit of jhanjra project colliery