By Daniel Puchert Partially state-owned telecommunications company Telkom announced in its financial results for the year ending 31 March 2025 that its ADSL subscribers had more than halved to under 30,000. According to the company’s operational data, ADSL lines decreased from 64,959 in March 2024 to 29,770. This 54.2% decline highlights that the legacy broadband technology is slowly approaching the end of the road. Telkom’s ADSL business peaked at the end of March 2016 with 1.01 million subscribers — two years after fibre upstart Vumatel broke ground in Parkhurst . What followed was a sharp decline in Telkom ADSL subscribers. Customers connected to its copper networks decreased by more than 500,000 over the next four years. This was partly driven by Telkom itself, which began actively switching off its copper network in some neighbourhoods. If it did not have fibre in the area, it would offer a “fixed line lookalike” wireless service that ran over its cellular ...
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Mitsubishi ups stake in Jetti Resources’ copper extraction technology
Copper cathodes at Capstone’s Pinto Valley mine in Arizona. Image from Jetti Resources.
Mitsubishi Corporation (MC) announced that it has increased its stake in, and formed a new business alliance with Jetti Resources, a Colorado-based company that has developed a catalytic technology that enables extraction of copper from primary sulfide ores.
With the global decarbonizion race intensifying, demand is on the rise for copper, a metal vital for growth in electric vehicles and renewable energies. Facing aging mines with lower grades, the industry is looking at how much more copper they can produce out of existing operations – Chile’s Codelco, for example, is planning massive upgrades of its aging mines.
Jetti’s catalytic technology enables heap and stockpile leach extraction of copper trapped in primary sulfide ores, which are usually discarded due to their low copper yields being insufficient to justify traditional processing methods.
JETTI RESOURCES SAYS ITS TECHNOLOGY MAKES IT POSSIBLE TO EXTRACT COPPER FROM LOW-GRADE PRIMARY SULFIDES LIKE CHALCOPYRITE, THE WORLD’S MOST ABUNDANT COPPER MINERAL ORE
Capstone Mining confirmed the commercial-scale effectiveness of Jetti technology through its trial application last year at the Pinto Valley copper mine in Arizona. During the first year of the miner’s partnership with Jetti, cathode production per area irrigated doubled, Capstone announced last July.
Mitsubishi has been supporting the technology’s commercialization since 2019, when it first invested in Jetti to secure a stable supply of copper and contribute to MC’s efforts to address the problem of diminishing natural resources.
By forming a new business alliance, Jetti and MC will be strengthening their framework for future collaborations and making effective use of MC’s assets to promote the widespread adoption of Jetti’s technologies, Mitsubishi said.
The partners are set to start discussions on the proactive adoption of Jetti’s catalytic technology at mines that have thus far been unable to extract copper efficiently due to their high concentration of low-grade, primary sulfide ores.
Anticipating that global demand for copper will remain robust for at least the foreseeable future, MC’s Mineral Resources Group has identified it as one of its core products.
Chinese state and private investors have spent more than $16 billion over the last decade buying copper mines and projects including nearly 50 in Africa.
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