Shanghai Gold Exchange (SGE) Lowers Margin Ratios and Price Fluctuation Limits for Some Gold Deferred Contracts

On April 30th, South32 raised the development cost estimate for the Taylor deposit at its Hermosa zinc-silver project in Arizona, US, and delayed the timeline. First-stage capital expenditure has increased by more than 50%, from $2.2 billion in the 2024 FS to $3.3 billion. First production has been delayed by one year to H2 FY2028, full production has also been pushed back to FY2031. Cost increase was mainly due to contractor underperformance, slower-than-expected construction productivity, scope changes, inflation, US tariffs and higher input costs. Progress on a key ventilation shaft is the main bottleneck now. But the company also noted that ore reserves at Taylor increased by 52%, mineral resources rose by 10%, extending the expected mine life from 28 years to around 33 years.