Vegetation health conditions assessment and mapping using AVIRIS-NG hyperspectral and field spectroscopy data for -environmental impact assessment in coal mining sites oleh Narayan Kayet, Ph.D, Khanindra Pathak, Ph.D, C.P. Singh, Ph.D, V.M. Chowdary, Ph.D, Bimal K. Bhattacharya, Ph.D, Dheeraj Kumar, Subodh Kumar, Ph.D, Ibrahim Shaik, Ph.D