A busy Friday for mining newsflow saw Arc Minerals (AIM:ARCM) report a full-year loss as it regroups following Anglo American's exit from its Zambian copper joint venture, while BHP confirmed a leadership restructure days before incoming chief executive Brandon Craig takes the helm. Elsewhere, critical minerals developers Greenroc and Guardian Metal both advanced project milestones, and Talon Resources laid out its drilling plans for an Ontario gold target.
Arc Minerals posts full-year loss as Anglo American JV unwinds
Arc Minerals (AIM:ARCM) published its full-year results covering a period defined by the departure of Anglo American from its Zambian copper joint venture, leaving the company to reassert full control over the flagship Zamsort project. The results sent the shares down 19.0% to 0.575p, reflecting investor caution around the explorer's path to funding and development without its major partner.
With the JV restructuring behind it, Arc is now focused on organic progress. The company is targeting a drilling campaign at its Botswana asset in the second half of 2026, positioning the project as a near-term catalyst as it works to rebuild momentum across its Africa-focused copper portfolio.
Greenroc draws down €2m EIFO tranche for Greenland graphite work
Greenroc Strategic Materials (AIM:GROC) drew down the third tranche of its Danish state-backed EIFO loan facility, pulling €2m to fund drilling, bulk sample processing and pilot plant work at its Greenland graphite project. The drawdown confirmed the project remains on track and supported a 3.03% gain in the shares to 3.4p.
The EIFO facility provides Greenroc with a structured funding runway for the technically intensive work ahead, with the pilot plant programme central to demonstrating the commercial viability of the critical minerals asset at a time of heightened strategic interest in European graphite supply.
BHP splits Americas leadership ahead of Brandon Craig's CEO start
BHP (LSE:BHP) announced a restructuring of its executive leadership team, dividing the Americas region into two separate presidencies as incoming chief executive Brandon Craig prepares to assume the role on 1 July. The reorganisation signals Craig's intent to sharpen operational accountability across BHP's largest producing region before he formally takes charge. Shares edged 0.55% higher to 81.16p.
The reshuffle involves changes across the senior team, with Geraldine Slattery, Edgar Basto and Jessica Farrell among the executives affected by the new structure. The split of the Americas presidency reflects the scale and complexity of BHP's copper and iron ore operations across the region, which have grown significantly in strategic importance as the miner pivots toward future-facing commodities.
Guardian Metal to release Pilot Mountain tungsten PFS on 30 June
Guardian Metal Resources (AIM:GMTL) confirmed it will publish the pre-feasibility study for its Pilot Mountain tungsten project in Nevada on 30 June, with the results backed by a $6.2m investment from the U.S. Department of Defense. The announcement left the shares broadly flat at 15.81p, down a marginal 0.25%, as the market awaited the substance of the PFS itself.
The DoD backing underscores the strategic significance of domestic tungsten supply for U.S. defence applications, and the imminent publication of the PFS represents a material de-risking event for the project. Guardian Metal has positioned Pilot Mountain as one of the most advanced tungsten development assets in North America.
Talon Resources outlines 2,000-metre Eagle Lake drilling campaign
Talon Resources (AIM:TAR) set out the details of a 2,000-metre diamond drilling programme at its Eagle Lake gold project in Ontario's Wabigoon Subprovince, presenting the plan in an investor presentation that confirmed the project is fully permitted and capitalised ahead of the campaign. Shares were little changed at 1.2735p, down 0.12%.
Eagle Lake sits within a prolific gold-bearing geological corridor in Ontario, and the forthcoming drill programme is designed to test targets identified through earlier exploration work. With permitting and financing in place, Talon said the project is ready to move directly into the field phase.
