Physical description

Letter, three pages, 10 March 1982, Caldwell Connell Engineers to D.Cahill, Bendigo Mining NL re Central Deborah Goldmine, wastewater discharge licence.
Preliminary cost estimates of the cost of chlorination facilities for treatment of wastewater pumped from the Deborah mine are detailed. The objective of chlorination would be to oxidise sulphide present in the wastewater prior to discharge. Preliminary cost is $9100 for building, chlorination facility and piping.