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

03 three nos. u/g non-coring bore hole for degree of gassiness purpose at s.p. top seam of 27 / 28 incline of hariajam colliery.

Construction of 08 (eight) nos. ventilation stopping at gp seam in different places through 5/6 no. incline of hariajam 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

Construction of 05 (five) nos. p.c.c. ventilation stopping at g.p. seam at 22nd haulage dip district of 5/6 no incline of hariajam colliery.

01 one no non-coring vertical bore hole drilling 20 inch 500mm dia up to a depth of 182 meters from surface to water logged underground working sp middle seam near vt pump at kuhuka village at hariajam colliery.

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

Drilling of three (03) nos. 60m long non-coring upward borehole from cm caving panel in r-vi seam of khottadih colliery, pandaveswar area.

Construction of 1 one stopping r.c.c. work and 1 m thickness at 13th e/l from 1st companion dip of g.p. seam for strengthening of isolation stopping to avoid the whole water logged purpose at 5/6 no. incline of hariajam colliery.