Drilling of 03(three) no. nx size dia (ug) upward borehole in r-v (dobrana) seam at&#x0d belbaid colliery&#x0d

Drilling of 12 nos of nx size upward borehole from rviia to rvii seam for proving upper seam free from water at shyamsundar pur colliery

Drilling of 3 nos. of nx size incline upward borehole from rviia to r vil&#x0d seam for proving upper seam free from water at shyamsundarpur colliery.&#x0d

Drilling of 2 nos. nx size non coring upward borehole from rviic seam (at 9a development panel) to rviia seam of cm project under nakrakonda kumardihi b colliery

Supply and installation of core drilling (upward hole of nx-size) and logging of overlying strata.

Drilling of 06 nos nx size upward vertical borehole in proposed depillaring panel 28ls, 24ls from seam c to seam a at kurja sheetaldhara ug mine of hasdeo area for six month time period

Drilling of 06 nos nx size upward vertical borehole in proposed depillaring panel 28ls and 24ls from seam c to seam a at kurja sheetaldhara ug mine of hasdeo area for six month time period

Drilling of 03 nos. nx size non-coring borehole from surface to kajora (r-ix) seam and 2 nos. nx size non-coring borehole from surface to jambad (r-viii) seam of porascole east colliery

Drilling of 03 nos. nx size non-coring borehole from surface to kajora (r-ix) seam and 2 nos. nx size non-coring borehole from surface to jambad (r-viii) seam of porascole east colliery

Drilling 03 nos of nx size coring borehole for analytical study of coal in comparative manners with respect of barmuri ocp.