Doing a detailed review of underground stope drill and blast performance can easily identify the main factors behind stope performances against designs. It is critical to review both technical and operational drill & blast aspects, identify issues and provide recommendations however it's more better to implement the recommendations to see improvements in the stope recovery. Below is a detailed stope drill and blast review I did and the summary and recommendations provided. Simple things that add up to an overall stope performance. ________________________________________________________________________ SUMMARY: • From the reviews done so far there is minimal to no issues identified in the technical design perspective in terms of drill and blast design parameters. • Void ratio was tight with 0.955 against site specific 0.95 after applying 30% swell factor. • From the LPU data, 5 slot holes were significantly undercharged. Prep returns & Simba cleanout plods show that these holes were prepped. There is possibility of slot bridge or significant slot underbreak expected as we do not have a breakthrough void yet at this stage. • Logger data and charge returns show that the correct number of dets were charged with correct delays assigned and correct number of primers charged as per the plan. There is no return to show that the primers were staggered as per the charge plan. • Total of 15.7t emulsion used. 14.8t emulsion charged into blast holes against a design of 14.2t. RECOMMENDATIONS: 1. D&B Engineers to check new void ratio using the CMS after undercuts taken to see if the downhole shot will be accommodated by the usable voids available. 2. D&B Engineers to notify slot location and the slot holes to the charge crews and stick to the approved charge plan. 3. Charge crews must be aware of how critical the slot is and notify engineers of any issues confronted during charging and assigning delays to the slot holes. This also includes other blast holes. 4. D&B Engineers to check LPU Data to make sure charging was done according to the charge plan issued. 5. LPU Operator to use LPU Hole ID same as Design Hole ID during charging to make it easier to compare ascharged LPU data against design data. 6. Shots greater than 20m height to be left for at least 3 hours (3hrs to confirm?) after charging to allow gasing of emulsion to the designed uncharged collars. 7. D&B Engineers to maintain reviewing of prep returns prior to finalizing charge plans.