Roof bolting job in s.p. top seam working district and s.p. middle seam in different places 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 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

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

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

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.

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

04 four nos. underground non-coring borehole for parting proves purpose in old working water logged area at g.p. seam through 5 and 6 incline of hariajam colliery.

Drilling of 400mm non-coring vertical bore hole near sand bunker till r-v (satgram) seam at j. k. nagar (r) colliery

Construction of 15 (fifteen) nos ventilation stopping at s.p.middle seam and top seam at 27/28 no . incline of hariajam colliery.