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

Roof bolting job in sp top seam in different places of working district through 27/28 no. incline of hariajam colliery.

Construction of 10 (ten) nos. ventilation stopping at sp middle seam through 27/28 incline of hariajam colliery.

Roof bolting job in sp top seam working district at different places of 27/28 no. incline of hariajam colliery.

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

Construction of 08 (eight) nos. ventilation stopping at sp top seam from 13th dip/22 level to 19th dip/22 level and 4th dip in between 22nd and 21st level towards east side near drift - a through 27/28 incline of hariajam colliery.