Mark Isto
Analyst · Scotiabank
Thanks, Tony. Starting on Slide 6, I'd like to discuss some of our recent developments at several of our operating key properties. At Mount Milligan, 2018 production was very good considering the constraints on water throughput -- constraints on throughput caused by water restrictions. Gold and copper production for calendar year 2018 achieved a high end of the revised guidance published in August. And gold production was 195,000 ounces compared to the guidance range of 175,000 to 195,000 ounces. And copper production was 47.1 million pounds compared to the guidance range of 40 million to 47 million pounds. During the December quarter, production from Mount Milligan was 60,000 ounces of gold and 11.8 million pounds of copper. Sufficient water supply has been an issue at Mount Milligan for several quarters. The operation was designed to use surface water runoff for makeup process water. But during the past three years, this area of British Columbia has seen precipitation levels that are about half of what long-term records indicate. As a result, process water has been in short supply in the past couple of years. As you can see on the graph at the bottom of the slide, quarterly average throughput has suffered since late 2017 when the issue became apparent. With respect to water sourcing and associated permitting activities at Mount Milligan, Centerra has reported that permitting applications are in process to draw additional flow during the spring melt period for the next freak 3 years from each of Philip Lake, Rainbow Creek and Meadow Creek. If these applications are approved, Centerra plans to store this additional water in the tailings facility for use during the remainder of the year, which will allow operations to continue at full capacity. In addition to this strategy, it is intended to bridge -- in addition to this the strategy, which is intended to bridge the need in the medium term, Centerra is also completing a regional water inventory to identify other long-term sources that could provide additional water through the end of the mine life. For calendar year 2019, mill throughput at Mount Milligan is expected to be reduced during the remainder of the winter season to properly manage the water balance until water flows increase in the spring. Once the spring melt has commenced, which typically occurs in April, mill throughput levels are expected to return to full capacity. The second half of calendar 2019, Centerra expects to achieve an average throughput of approximately 55,000 tonnes per day. For the full calendar year, Centerra expects Mount Milligan's total payable gold production to be in the range of 155,000 to 175,000 ounces and payable copper production to be in the range of 65 million to 75 million pounds. Note, that while the gold production guidance is lower than actual calendar 2018 production and copper production guidance is higher, using current gold and copper prices in the midpoint of the 2019 guidance, net revenue, to us, for our gold and silver streams at Mount Milligan would be slightly higher than calendar 2018. Moving on to Slide 7. I would like to provide some comments on Rainy River and Peñasquito. At Rainy River, ramp-up efforts by the new management team are continuing with good progress achieved through 2018. The December quarter was very good with mill throughput reaching a run rate of almost 26,000 tonnes per day, which is the first full quarter in which the mill averaged a daily run rate above the target 24,000 tonnes per day. Availability was low at 80% due in part to a 10-day suspension for mill repairs, which brought the average throughput down to 21,000 tonnes per calendar day, but the higher run rate demonstrates good progress. In addition to the higher throughput, we saw higher grade for the quarter at 1.42 grams per tonne. All this contributed to a strong gold production, which was up 39% from the previous quarter to 77,000 ounces and full calendar-year production of 227,000 ounces. As management has been improving the performance of the open pit, New Gold has decided to defer the underground development plan to 2020 and spend this calendar year reviewing the underground development scenarios. Turning to Peñasquito. First gold production from the Pyrite Leach Project on December -- or on November 29 and commercial production was achieved shortly thereafter in December. We are very pleased to see this project completed ahead of schedule as it is expected to recover approximately 35% of the gold and 42% of the silver currently reporting to tailings, which is expected to add 1 million ounces of gold and 44 million ounces of silver over the remaining life of mine. All of this additional production is subject to our 2% NSR. With respect to production, Goldcorp processed higher carbonaceous ore in December quarter from the Chile Colorado pit, which had some negative impacts on gold recovery. During calendar 2019, Goldcorp expects grades and recoveries to improve as the mine benefits from the completion of the multiyear waste stripping campaign in the Peñasco pit as well as a full year of production from the Pyrite Leach plant. Finally, we are pleased to see that the combined Newmont Goldcorp has identified Peñasquito as a core asset in the portfolio of the merged company. Peñasquito is a significant asset in our portfolio, and it's great to know it will continue to be managed by a strong operator. I'd like to wrap up on Slide #8 with a few short comments on some of the other key development stories in our portfolio. At Barrick's Cortez mine, production to us was approximately 20% lower in the December quarter compared to the prior year quarter because of lower production subject to a royalty. We expect to see increased production from Crossroads as waste stripping advances through 2019. We expect to receive a Crossroads production profile update during the March quarter and should be in a position to share that with you on the next quarterly conference call. Turning to Barrick's Pueblo Viejo mine. Gold production was lower this past quarter compared with the year ago, due to lower grade and recovery, in part -- caused in part by higher organic carbon in the ore. While this lower production was disappointing, the main story at this operation is the growth potential resulting from the pre-feasibility study currently underway for the combined expansion project, which includes the pre-oxidation heap leach pad, a new mill and floatation concentrator, and additional tailings capacity. On a 100% basis, Barrick expects that this project could increase throughput by 50% to 12 million tonnes per year, allowing the mine to maintain an average gold production of approximately 800,000 ounces after 2022. This project has a potential to convert roughly 7 million ounces of measured and indicated resources to proven and probable reserves. We look forward to hearing updates from Barrick on the progress of the pre-feasibility work underway. Finally, at Golden Star's Wassa mine in Ghana, operations continue to perform well. Wassa produced 150,000 ounces of gold in calendar 2018, and Golden Star is expecting calendar 2019 production of 170,000 to 180,000 ounces, which is 13% to 20% higher than the 2018 production level. Milling rate is expected to increase in calendar 2019 from 3,500 tonnes a day to a target of 4,000 tonnes per day in calendar 2020. And capital has been allocated to upgrade infrastructure and complete additional delineation in stope drilling. Deep drilling at Wassa is continuing to show positive results and a PEA on the optimal long-term development is expected in the second half of 2019. Although the bulk of the upside we've seen from our Golden Star investment has been from Wassa, improvements at Prestea and raise development, long-hole drilling and blasting productivities are expected to continue, supporting an increased production rate in calendar 2019. During the December quarter, the plant at Prestea was converted to a low tonnage, high-grade configuration, allowing efficient processing of this target mining rate. I spent the last week in Ghana with Golden Star and was impressed by the progress being made at Wassa. I was also encouraged by the work being done -- being undertaken at Father Brown. As you may remember, this is a high-grade surface ore feed from Wassa in the past and Golden Star is evaluating the opportunity to supplement the Wassa mill with underground feed from Father Brown. The Wassa mill has an installed capacity of 7,500 tonnes per day compared to the 2019 target feed rate of only 3,500 tonnes per day. I'll now turn the call over to Bill to discuss our financial results.