Drilling 350mm dia in seam borehole from rvii to rviia seam at shyamsundarpur colliery

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

Drilling of one no 400 mm dia borehole from rvii to riia seam for dewatering the rviia seam by lowering of submersible pump at shyamsundarpur colliery

Drilling 01 (one) no 500 mm dia borehole for surface to rvii seam at shyamsundarpur colliery

Drilling of 01 nos of 04 inch dia horizontal borehole from rvii to rvii seam for dewatering in panel 2l at shyamsundarpur colliery

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 01 (one) no 40 m length 100 mm dia horizontal borehole from 24l 5d to 24l 7d at rviia seam of shyamsundarpur 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

(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

Drilling of 01 nos of 04 inch dia horizontal borehole from rvii to rvii seam for dewatering in panel 2l at shyamsundar pur colliery.