bids are invited for operation and maintenance of other machines and plants - bidder to quote total amount including gst-sitc of h-type tlp with new foundation for qty 54 each , operation and maintenance of other machines and plants - bidder to quote total amount including gst-sitc of zinc ribbon anode with backfill for qty 1106 m , operation and maintenance of other machines and plants - bidder to quote total amount including gst-sitc of copper ribbon anode with backfil for qty 6304 m , operation and maintenance of other machines and plants - bidder to quote total amount including gst- sitc of zinc anode with backfill for qty 2 each , operation and maintenance of other machines and plants - bidder to quote total amount including gst-sitc of etp cu rod earthing with backfil for qty 48 each , operation and maintenance of other machines and plants - bidder to quote total amount including gst-sitc of 5ka solid-state polarisation cel for qty 85 each , operation and maintenance of other machines and plants - bidder to quote total amount including gst-construction of underground concrete box for qty 10 each , operation and maintenance of other machines and plants - bidder to quote total amount including gst-making pipe to cable connection for qty 162 each , operation and maintenance of other machines and plants - bidder to quote total amount including gst-sitc of 10 cm2 polarization coupon for qty 2 each , operation and maintenance of other machines and plants - bidder to quote total amount including gst-sitc of 1 cm2 ac coupon for qty 5 each , operation and maintenance of other machines and plants - bidder to quote total amount including gst- supply, laying 1cx6mm2 cu armoured cable for qty 1296 m , operation and maintenance of other machines and plants - bidder to quote total amount including gst-supply, laying 1core x 25mm2 cu armoured for qty 6509 m , operation and maintenance of other machines and plants - bidder to quote total amount including gst-sitc of remote monitoring device for qty 2 each , operation and maintenance of other machines and plants - bidder to quote total amount including gst-sitc of permanent reference cell for qty 2 each