Reduced Infrastructure Requirements NEUTRA-MILL WATER TEATMENT SYSTEM – CASE STUDY ACID ROCK DRAINAGE – BENAMBRA BASE METAL MINE Difficult access Minimal infrastructure Acceleration of treatment process Aqueous metal concentrations lowered ph of 180 megalitres raised from 2.8 to 8.0 Treatment precipitates automatically deposited into tailings pond Lowered cost of treatment relative to the existing conventional dosing system LOCATION North-Eastern Victoria, Australia. 260 kilometres north-east of Melbourne (Latitude: 37° 00' S, Longitude: 147° 54' E). SETTING AND CLIMATE The Benambra Mine is located in the highlands of Victoria. Mineralisation occurs at an elevation of 600m above sea level in the headwaters of the Tambo River. The local terrain is steep and heavily forested. Annual rainfall

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