Gem Bids For Custom Bid For Services - coNSTRUCtIor oR MNNTEIYANCE OF ROADS OR RUNWAYS OR IN BUILDING OPERATIOI{S INCLUDING LAYING DOWI{ UNDERGROUT{D ELECTRIC, WIRELESS, RADIO, TELEVISION, TELEPHONE'TELEGRAPH AND OVERSEAS coMMUNIcATIoN cABLEs aND SIMILAR OTHER UNDERGROUITD CABLING WORI(, ELECTRIC LINES, WATER SUPPLY LINES AND SEWERAGE PIPE LINES