Based on our simulations, the fragmentation (P80) results improved from 13.3 inches to 10.5 inches, which allowed us to enhance shovel performance and extraction, meeting the crushing requirements. The field tests confirmed our simulations, with a fragmentation in P80 of around 9 to 10 inches.
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The success rate of good pre-split discipline is measured against the visibility of pre-split barrels and overall condition and stability of the high wall. A success rate of 55% visibility of pre-split barrels was evident after the implementation of the first approved blasting parameters.
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The implementation of DaveyTronic® electronic detonators has brought numerous benefits to Shougang: reduced fragment size (P80) at each detonation face by approximately 2 inches, increased ore excavation rate by up to 11% means more efficient ore extraction, increased crusher productivity by up to 9%.
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The operation reduced blasting costs by 3.2%. By using MIC, the mining operation could eliminate the use of diesel in the pit and its management for manufacturing. This reduced 851 m3 of diesel in one year, equivalent to 476 tons of CO2.
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In collaboration with our customer, we devised a custom solution that involved carrying out field exercises during a specific phase of mine development. This information helped us design drilling and blasting strategies that ensured the desired fragmentation outcomes in the ballast and ore sectors of Minera Sierra Gorda’s mine.
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Densiex® lowered induced vibration by up to 30% when compared to conventional explosive emulsion (70/30), while maintaining the fragmentation standard during blasting. Therefore, Densiex® represents a suitable solution to enable rock blasting in areas near the caves.
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Thanks to this emulsion, we improved wall stability and generated benches with a lower risk of failure based on near-field cross-hole data. In addition to improving mine safety, we reduced operational costs.
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Thanks to Enaex’s technical work, the client decreased its fine fraction (less than 50 mm) from 20% to 10.6%. The introduction of Densiex exceeded expectations, generating fine fraction at a rate of 9.3% in a 50-mm opening, signifying a 53.5% reduction compared to the baseline (20% passing through 50 mm).
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The CV02 screening results revealed a Lumpy Fines ratio of 17%. With the new version of Vertex A®, we were able to not only meet UMK’s goal but also to exceed them by 3%.
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We performed fracking with a 30-meter evacuation radius and weekly removal of 3,500 cubic meters without displacement of residents. Thanks to Plasma 4TH®, the client was able to reactivate the project on all the fronts paused due to the evacuation problems of the community.
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The blasting operation was completed successfully, setting a record for the highest number of electronic detonators initiated in an urban area by Enaex. The vibrations remained within the established parameters, resulting in no damage to the structures or adjacent tanks.
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