The geologically unpredictable slope (GUS) was identified July 2023 and monitoring started. On January 25, 2024, GUS area was affected by potential runout (5% probability) closed area to all mining activity. February 7th at 8PM, as a precaution, 7C south mining operations relocated from behind pit crest above GUS. On February 11th GUS highwall collapsed at 4:12PM.