The mining sector's news flow on Tuesday spanned pricing resilience, project pivots and liquidity strain. Gem Diamonds pointed to firming prices at its flagship Letšeng mine even as volumes softened, while Ferrexpo delivered the day's sharpest warning, flagging a cash runway that now stretches only to the end of August after an attack severed its Black Sea export route. Elsewhere, smaller developers reshuffled portfolios and drilling programmes as they hunted for the next catalyst.
Gem Diamonds gains as Letšeng prices firm
Gem Diamonds (LON:GEMD) said all operational and financial metrics remain within 2026 guidance, with strong demand lifting prices at its Letšeng mine despite lower carat recovery in the first half. The update sent shares up 10.557% to 3.77p, as investors welcomed evidence that pricing strength is offsetting the softer output.
ECR Minerals redirects effort to Maddens after portfolio review
Ecr Minerals (LON:ECR) is shifting mining resources from its Raglan project to Maddens, redeploying personnel and a mobile wash plant to trial alluvial mining there after a portfolio review identified the Australian asset as its highest-priority development opportunity. Shares fell 9.756% to 0.185p on the day.
Premier African pushes back Zulu restart on Canmax talks
Premier African Minerals (LON:PREM) will not resume plant operations at its Zulu lithium project this month, delaying the restart until an extension to a key offtake deadline is agreed with Canmax Technologies. The stock dropped 10.526% to 0.017p as the delay extended uncertainty over the project's near-term cash generation.
Ajax to trade Eureka assets for Argentine copper-silver ground
Ajax Resources (AQSE:AJAX) has signed a binding preliminary agreement to swap its Puna Metals portfolio, including the Eureka assets, for two Argentine copper-silver projects at Rachaite and El Salto, with no cash changing hands in the deal. Shares slipped 8.17% to 4.0p as the market weighed the asset swap.
GreenRoc hits graphite ore in first Amitsoq drill hole
Greenroc Strategic Materials (LON:GROC) has begun Phase III drilling at its Amitsoq graphite project in Greenland, intersecting graphite ore in its first hole at a depth and thickness matching expectations. Shares edged up 1.786% to 2.85p on the update.
Ferrexpo flags cash squeeze after fatal vessel strike
Ferrexpo (LON:FXPO) warned that a fatal drone attack on an export vessel has severed its Black Sea shipping route, leaving the Ukrainian iron ore pellet producer with sufficient liquidity only until the end of August. Shares dropped 6.84% to 28.58p as the warning underscored the operational risk still facing the group's logistics chain.
Anglo American secures Copper Mark across Peru and Chile sites
Anglo American (LON:AAL) saw its Quellaveco operation earn its first Copper Mark and Molybdenum Mark, while three Chilean operations had their 2022 awards reaffirmed. Shares eased 1.428% to 3589.0p despite the responsible-production endorsement.
Berkeley Energia recruits former Endesa boss to board
Berkeley Energia (LON:BKY) has appointed José Bogas Gálvez, who led Spanish utility Endesa for 12 years, as a non-executive director to help unlock permitting for its Salamanca uranium project. Shares rose 1.6% to 25.4p as investors welcomed the addition of a heavyweight local energy executive to the board.
