CVPPPL/PDHEP/C&P/NIT-190/2021/499 : Diamond core drilling including driving, ramming of drill holes for lowering of casing of PX, HX & NX size for (+/-) 230.00 m deep 01 (one) drill hole is proposed to explore the Northern Corner of Power House cavity and to establish the rock cover above power house including core preservation & water permeability test in all types of strata as per relevant IS codes for Kirthai-II HE Project