Exploratory drilling works of one hole of 50m depth in right bank of the river at el 415m for subansiri upper he project 1605mw, arunachal pradesh

Exploratory drilling works of one hole of 165m depth at left bank of river near dam axis to establish grouting requirement by carrying out groutability testing for subansiri upper project (1605mw)

Exploratory drilling works of one hole of 150m depth on left bank at el320 m to explore the area between el 296m and el346 m for subansiri upper project (1605 mw), arunachal pradesh

Geological exploratory by making 01 no. new drift rdr-8 at el 460m drift size 1.8x2.1 m rectangular section 70 meter drift on right bank of river subansiri at dam site of subansiri upper project in arunachal pradesh

Geological exploratory by making 01 no. new drift ldr-5 at el 460m drift size 1.8x2.1 m rectangular section 70 meter drift on left bank of river subansiri at dam site of subansiri upper project in arunachal pradesh

Exploratory drilling works (40 nos. holes 4 m each) at right bank drift and left bank drift of dibang multipurpose project, arunachal pradesh

Geological exploration by extension of 01 no. of already existing drift (rdr6), drift size 1.8x2.1m rectangular section by another 130 m on right bank of river subansiri at power house site of subansiri upper project in arunachal pradesh

Geological exploration by extension of 01 no. of already existing drift (rdr6), drift size 1.8x2.1 m rectangular section by another 130 m on right bank of river subansiri at power house site of subansiri upper project in arunachal pradesh.

Geological exploration by extension of 01 no. of already existing drift (rdr6), drift size 1.8x2.1 m rectangular section by another 130 m on right bank of river subansiri at power house site of subansiri upper project in arunachal pradesh.

Exploratory drifting work of rdr-2 extension of 55m (40plus15)m length (1.8 m x 2.1m) size at right bank of kamala river at kamala he project, tamen, arunachal pradesh