Sukari production up 53% over Q4.22 Apr 2021 08:19
HEALTH & SAFETY
Operational safety remains a strict focus throughout the Group in creating a safe work environment which supports a healthy and productive workforce. In Q1, there was one lost time injury ("LTI") resulting in a lost time injury frequency rate ("LTIFR") of 0.42 per one million site-based hours worked, representing a 53% improvement QoQ. The total recordable injury frequency rate ("TRIFR") was 1.67 for Q1 per one million site-based hours worked, representing a 78% improvement QoQ.
In Q1, Centamin experienced no material production, sales or supply chain disruptions due to COVID-19 at Sukari or the exploration projects in West Africa. The Company has implemented strict test, track, isolate and safety measures for the long-term, acknowledging the duration of the pandemic and the lasting impacts remain uncertain. There is an ongoing focus on staffing levels and workplace fatigue management while global restrictions on the movement of people persist.
Production
(Q1 2021 vs Q4 2020)
Sukari gold production for the quarter was 104,047 oz, a 53% increase compared to the fourth quarter of 2020 ("QoQ"), driven by improved open pit and underground mined grade, resulting in a 34% increase in feed grade; and a 17% reduction compared to the first quarter of 2020 ("YoY") reflecting the conclusions of the Life of Asset Phase 1 and three-year outlook presented in December 2020.
Open Pit Mining
Open pit ore mining in Q1 focussed primarily on the low to medium grade Stage 5 North area. More low-grade tonnes were mined than scheduled driven by ongoing conversion of waste to ore. Total open pit ore mined for the quarter was 3.8Mt, a 6% increase QoQ, at an average mined grade of 0.77 grams of gold per tonne ("g/t Au"), a 5% improvement QoQ.
Total open pit waste material mined for the quarter was 18.8Mt, a 6% increase QoQ. The strip ratio for the quarter was 5:0 (waste:ore). The contracted waste-stripping programme commenced ahead of schedule and will continue to ramp up through the year.
Underground Mining
Underground mining in the quarter focussed on the Ptah zone, including some higher-grade stopes. Total ore mined was 170kt at an average combined (stoping and development) grade of 5.84g/t Au. This represented a 3% increase in tonnes QoQ and a 60% increase in grade QoQ driven by the scheduled mining of higher-grade stopes.
The underground ore split was 114kt of ore mined from stopes, at an average grade of 6.86g/t Au, and 56kt of ore mined from development, at an average grade of 3.77g/t Au. Total underground waste mined was 87kt, a 29% decrease QoQ.
The Company continues to work closely with the underground contractors to mitigate the impacts of reduced staffing levels due to COVID-19.
Processing
The plant processed 3.0Mt of ore, a 4% increase QoQ, at an average feed grade of 1.16g/t Au, a 34% improvement QoQ. The metallurgical gold recovery rate was 88.6% for the quarter, consistent QoQ. During the quarter, t