Modern Mining March 2025

A controlled blast using BME›s AXXIS initiation system.

BME’s sustainable dual salt emulsions.

they reduce the environmental impact of blasting, explained Hariparsad. “Dual salt emulsions are less harmful in terms of nitrate contamination and greenhouse gas emissions than single salt emulsions,” he said. “In a single salt emulsion, only ammonium nitrate is used, whereas a dual salt emulsion could contain calcium nitrate or sodium nitrate. These emulsions are less susceptible than traditional explosives to nitrate leaching, which can cause environmental damage and threaten a mine’s compliance with local legislation.” Emulsions are also manufactured at lower temperatures, which helps to reduce power consumption and carbon emissions. The manufacturing process of cold emulsion requires lower temperatures than the equivalent processes for single salt emulsions – demanding significantly less energy for heating. In addition to producing less carbon emissions, there is also an efficiency benefit in the supply chain process. The emulsion needs less time to cool, and this improves the efficiencies related to handling and transportation. BME has been an environmental pioneer in the use of recycled oil as a fuel agent in its emulsions, he noted. “By doing this, the company is able to remove millions of litres of potential hazardous used oil from the market each year, avoiding the possibility of water or land contamination,” he said. “The strategy for collecting this used oil is a further enhancement of BME’s ESG contribution, as it engages a network of small businesses in a highly controlled process.” Supporting mining’s green targets Dhoorgapersadh highlighted that mining’s focus on ESG has contributed to the mining value chain becoming increasingly integrated, with the ESG performance of suppliers impacting on the mines’ own strategic targets. “In line with the approach of the Omnia Group, BME has embraced the concept of triple bottom line reporting – to include economic, social and environmental relationships,” he says. “We integrate economic development, environmental quality and social equity into our practices as part of our value proposition to stakeholders.” This is an essential aspect of partnerships in the mining sector today, as local and global benchmarks require that mines include the performance of upstream and downstream stakeholders in their ESG assessment. In the measurement of carbon emissions, for instance, mines need to take into account not just their own Scope 1 emissions, but those Scope 2 and Scope 3 emissions associated with activities outside of their own businesses. “We consider our ESG focus as key to our business values, and are proud that our efforts support our mining customers as they achieve their own green goals,” he said. n

Hariparsad, General Manager Technology and Marketing. “Our sustainability focus includes raising performance efficiency across the value chain.” As a pioneer in electronic initiation systems, BME’s AXXIS® technology allows mines to improve the quality of their blasting, said Hariparsad. Among the advantages of its electronic initiation technology is the precision and flexibility of the delay-timing, as well as the ability to plan large blasts. Blast design software such as BME’s Blastmap™III allows not only the development of complex firing patterns, but the simulation of blasts for improved certainty and results. A key benefit of being able to plan and control blasts with precision is that this optimises the fragmentation of blasted rock to make loading and hauling phases more efficient in terms of their energy consumption. Good fragmentation also means that less energy and time is lost to the breaking of oversize rocks before loading and crushing. Another way that mines gain efficiencies is by planning and detonating larger blasts. BME’s flagship AXXIS Titanium® can initiate up to 20 000 detonators per blast, which means that the pit needs to be cleared for blasting less often. Reducing this disruption makes for a more streamlined and efficient operation. Dual emulsion chemistry The chemistry of BME’s dual salt emulsions ensures that

MARCH 2025 | www.modernminingmagazine.co.za  MODERN MINING  29