Exploratory drifting work of ldr-3 extension-2 (downstream surge cavern)361 m length (1.8 m x 2.1m) size at left bank of kamala river at kamala he project, tamen,arunachal pradesh

Exploratory drifting work of ldr-1 extension of 82 m (52plus 15plus 15) m length (1.8 m x 2.1m) size at left bank of kamala river at kamala he project, tamen, arunachal pradesh

Exploratory drifting work of ldr-1 extension of 82 m (52plus15plus15) m length (1.8m x 2.1m) size at left bank of kamala river at kamala he project, tamen, arunachal pradesh

Exploratory drifts work of size 1.8 m (w) x 2.1 m (h) of rectangular section at power house site of kamala he project, arunachal pradesh

Exploratory drifts work of size 1.8 m (w) x 2.1 m (h) of rectangular section at power house site of kamala he project, arunachal pradesh.

Additional geological exploratory drilling of 05 nos. holes (ddh-48,49,50,51,52) at kamala he project, tamen, arunachal pradesh

Exploratory drilling works of 04 nos holes at right bank (181m each) and 04 nos holes at left bank (188m each) of kamala river at dam axis of kamala he project, arunachal pradesh

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

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

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