Tender For corrigendum : (part a)- supply and laying of stone ballast (gravels) and copper earth strips in sy at mph. (part b)- construction and foundation of structure for lightning arrestor at mph - name of work -: (part a): supply & laying of stone ballast (gravels) and supply & laying of copper earth strips in switchyard at matatila hydro power station, distt. lalitpur, (part b): construction & foundation of structure for lightning arrestor of 2mva 1st transformer along with fixing & commissioning of lightning arrestor in switchyard at matatila hydro power station, dist. lalitpur.