WA IHI NORTH PROJ ECT ECONOMI C IMPACTS For New Zealand consenting purposes only. Forward looking information must not be relied on for investment purposes. 4 established in economic analysis and local lived experience. WNP would more than double the economic contribution of the mine to the region and nation. • The local economy is already diverse and resilient. Extended mine life will mean additional time to put in place a comprehensive post-mining transition strategy, so that that the local community continues to benefit from a well-functioning economy. 2. Project description The current Waihi life of mine plan (LoMP) ceases production at the end of 2030. This is followed by remediation activities, but these are not employment or economic activity intensive. The WNP seeks to extend that to 2038. In our analysis we take a conservative approach and assume the productive period ends in 2036, with quantified remediation and other works following in 2037 and 2038. These final remediation activities are not employment and economically intensive, however we report the expenditure and employment associated with these activities. The WNP includes the following key elements: • A new underground mine at Wharekirauponga with associated surface infrastructure to be located on farmland (owned by OGNZL) at Willows Road with underground access to the existing Processing Plant at Waihi; • A new open pit, the Gladstone Open Pit (GOP), with associated works to afford conversion to a tailings storage facility; • A temporary rock stack at Willows Road for the Wharekirauponga Underground Mine and a Northern Rock Stack (NRS) near the existing Tailings Storage Facilities (TSFs) and Processing Plant; • A new Tailings Storage Facility 3 (TSF3) constructed to crest height of 155m RL; • An upgrade of the existing Processing Plant to 2.25 MTPA throughput capacity; and • An upgrade of the existing Water Treatment Plant (WTP). The WNP has the potential to add in excess of 1.6 million ounces of gold and 2.2 million ounces of silver production over a thirteen-year period. It will add to the life of Project Martha by approximately six years and provide a more productive and robust project with additional revenues, multiple and secure sources of production, increased employment, and will maximise the recovery of the Crown’s resource.
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