Renovation of one no. existing 250mm dia 50mt depth vertical borehole with lifting of 150mm dia damage pipe and lowering new 150mm dia pipe at sankalpa khani incline bunker no 6 of bankola colliery

Lifting of existing old damaged pipes and lowering of new seamless pipes 150mm dia and 225m length in vertical stowing range of bunker no. 2 at jambad ug colliery

Lifting of existing old damaged pipes and lowering of new seamless pipes 150mm dia and 225m length in vertical stowing range of bunker no. 2 at jambad ug colliery

Drilling 03 three no 30 mtr depth 600mm dia vertical in seam borehole in between rvii and rviia seam at shyamsundarpur colliery retender

(1) drilling 01(one) no 400 mm dia borehole for surface to rvii seam near sarpi bunker and majhi para&#x0d (3) drilling of 01 (one) no 31m depth 250mm dia inseam borehole from rviia to

Cleaning and extraction of old damage pipe of existing vertical borehole no 16 from surface to dobrana rv seam 1west dip 11l and also lowering of new pipe including casing pipe in place of old damage pipe for dewatering no 6 pit wrokings of dobrana r

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

Cleaning of sand bunker and vertical borehole from surface to kenda r vi seam at north jambad unit of bahula colliery under kenda area ecl

Cleaning of jammed bore hole from surface to rviii bottom seam and lowering 150mm dia stowing pipe upto 140m after cutting of worn out pipe from bore hole located at nilkantha temple sand bunker of khandra colliery

Renovation of one (01) no. vertical borehole in stowing bunker no. 2 (used for sand stowing) of 133m. depth and 150mm. dia from surface to kenda (r-vi) working at 25 dip/ 2dip level of parasea colliery under kunustoria area.