David Strang
Analyst · Paradigm Capital
Thank you, Courtney, and thank you, everyone, for joining us today. We've had a great start to 2024, driven by the strong execution of our growth strategy coinciding with highly favorable market conditions for copper and gold. During the quarter, copper prices rallied to their highest levels in nearly 2 years, fueled by rising demand expectations, while the supply outlook remains extremely constrained, as evidenced by our recent treatment and refining charge negotiations where we locked in 2-year TC/RC terms in the low teens on roughly 1/3 of our projected concentrate production.
At the same time, due to macro and geopolitical uncertainty, gold prices hit all-time highs. These positive trends in both copper and gold markets arrive at an opportune time as we are on track to reach our highest annual production levels ever. This includes anticipated contributions from the Tucuma project which is now approximately 97% complete. I'm also happy to share that commissioning of Tucuma advancing ahead of schedule, and as a result, we are narrowing our projected time line for initial production to early Q3 '24. While Makko will delve into more detail on our progress at Tucuma, I want to express my deepest gratitude to our team on the ground, which just marked over 5 million hours of work completed with 0 lost time injuries. This is an incredible achievement and I commend our leadership team at Tucuma for the strong safety culture built over the past 2 years.
As we rapidly approach an important inflection point in our consolidated copper production profile, I'm also pleased to report that our Xavantina Operations are on track to deliver record gold production again this year. In fact, during the first quarter, we produced 18,234 ounces, representing an increase of nearly 5,800 ounces or approximately 47% compared to the first quarter of 2023. This increase is attributable to the successful completion of the NX 60 growth initiative last year as well as higher-than-expected gold grades, which averaged over 16 grams per tonne during the period. This performance also resulted in unit operating costs for the quarter that were below our full year guidance.
More specifically, C1 cash costs averaged $395 per ounce in the quarter versus our 2024 guidance range of $550 to $650 per ounce. And All-in Sustaining Costs per ounce averaged $797 versus a full year range of $1,050 to $1,150 per ounce. Given the continuation of positive grade reconciliations and additional visibility into mineable grades for the remainder of the quarter from indoor development channel samples, we are raising our 2024 gold production guidance from 55,000 to 60,000 ounces to a range of 60,000 to 65,000 ounces. Consequently, we are guiding to the low end of our full year gold C1 cash cost and All-in Sustaining Cost guidance. With gold prices continuing to hit all-time highs, we are well positioned to deliver record operating margins and cash flows at Xavantina this year.
At our Caraiba Operations, our performance during the quarter was largely in line with our expectations. From a strategic execution standpoint, we made good progress at the new external shaft, where we remain on schedule to reach a projected depth of approximately 600 meters by year-end. Upon our anticipated project completion at the end of 2026, this shaft is expected to reach a depth of over 1.5 kilometers, making it the second deepest shaft in South America.
From an operational standpoint, we started to see the positive impact of the recently completed Caraiba mill expansion during the quarter, with tonnes processed up over 5% compared to Q4 at approximately 853,000 tonnes. This increase in mill throughput partially offset a planned decrease in mined and processed copper grades that was compounded by delays in underground development during the period. As a result, a higher portion of ore was mined from lower-grade stopes than planned, resulting in average processed copper grades of 1.08% and production of 8,091 tonnes after recoveries of approximately 88%.
At the same time, we benefited from the sale of copper concentrate inventories carried over from the fourth quarter, resulting in copper tonnes sold being nearly 1,400 tonnes higher than tonnes produced during the quarter. With respect to full year production, we are reaffirming our guidance range of 42,000 to 47,000 tonnes with production expected to be weighted towards the second half of the year. Conversely, our copper C1 cash costs, which averaged $2.30 per pound produced in the quarter, are expected to decrease throughout the year due to projected sequential increases in copper grades and production over the next 3 quarters.
As a result, we are reaffirming our full year cost guidance at Caraiba of $1.80 to $2 per pound. It is worth noting that there is potential for unit cost to improve further as we continue to lock in more favorable concentrate treatment and refining charges than we have assumed in our guidance. Before I pass the call to Makko for a deeper dive into project execution, I will share a few highlights of our first quarter financial performance.
As mentioned, we experienced a fortunate culmination of high copper and gold prices, record production and operating margins at Xavantina and the sale of copper concentrate inventories carried over from the last year at Caraiba. Collectively, these factors drove solid first quarter cash flow from operations of $17.2 million and adjusted EBITDA of $43.3 million.
I'll now hand the call over to Makko after which Wayne will provide more detail on our first quarter financial results.