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The concentrated gold solution is pumped to electrowinning cells for further gold recovery. In <br />the electrowinning cells, an electrical current is passed through an anode submerged in the gold <br />solution. Gold and silver are plated onto the cathodes in the electrowinning cells. The cathodes <br />are then cleaned and the gold/silver residue is pressure filtered before being sent to the AGADR <br />refinery for further refining Note that there is no refinery planned at the SGADR and the <br />recovered gold/silver sludge from both the AGADR electrowinning circuit and the SGADR <br />electrowinning circuit will be processed in the existing gold refinery located at the AGADR. <br />The gold/silver sludge will be transported in vessels from the SGADR to the AGADR. <br />Barren solution from the electrowinning circuit at each ADR is pumped to the barren solution <br />storage tank for recycling onto each respective VLF. <br />Backup systems are designed into the operational features at both ADR facilities in order to keep <br />solutions circulating. Both ADRs will have backup pumps available both within the pumping <br />system and spares stored at the warehouse to ensure that if a pump is down because of failure or <br />routine maintenance, additional pumps are available. Should line power go down for any reason, <br />there will be emergency generators that will provide power to keep the pumping operational. Six <br />emergency generators currently are in place adjacent to the AGADR and on the AGVLF to <br />provide the necessary power at those facilities in the event of power failure to line power supply <br />system. Four emergency generators will be available at the SGADR and SGVLF. <br />8.1 Arequa Gulch ADR <br />No major changes to the existing AGADR facility will occur as part of MLE2. The existing <br />AGADR facility is designed to have five carbon -in- column trains for recovery of gold and is <br />designed to handle flows up to an average of 16,000 gpm and a maximum of 19,000 gpm. The <br />AGADR and associated AGVLF flow diagram is shown on Figure 8 -1. <br />Cripple Creek & Victor Gold Mining Company <br />Cresson Project Mine Life Extension 2 <br />8 -2 <br />