Geomechanics.io

BHP has made a fresh approach to acquire Anglo American less than three weeks before Anglo and Teck shareholders vote on their proposed US$53 billion merger, injecting new uncertainty into one of the sector’s largest pending deals. The move could reshape ownership of Anglo’s copper, iron ore and metallurgical coal assets, including operations in Chile, Peru and South Africa that are central to long‑term steel and energy-transition demand. For mine planners and project developers, a BHP–Anglo combination would likely trigger portfolio rationalisation, asset sales and revised capital allocation across multiple jurisdictions.

Researchers at New York University Abu Dhabi report Curiosity rover evidence that liquid water once flowed beneath aeolian dunes in Gale Crater, forming cemented crusts and polygonal fracture networks in fine-grained sandstones. High-resolution Mastcam and ChemCam observations show cross-bedded units with indurated tops and moisture-related diagenetic features consistent with shallow subsurface flow rather than surface runoff. For planetary geotechnics, the work implies past groundwater-driven cementation, altered shear behaviour of dune-derived sediments, and more complex subsurface stratigraphy relevant to future drilling and in situ construction on Mars.

A new algorithmic framework from MIT identifies the smallest “core” dataset needed to guarantee optimal solutions in structured decision-making problems such as geotechnical design under uncertainty. The method uses combinatorial optimisation to strip large datasets down to a minimal subset that still preserves the same optimal decision, reducing computation while maintaining solution quality. For geotechnical engineers running probabilistic slope stability, foundation or tunnel support analyses, this could cut Monte Carlo or scenario runs without sacrificing reliability in design outcomes.

Underground conversion drilling at Lundin Gold’s Fruta del Norte South deposit in Ecuador has intercepted 5.2 metres grading 491.62 g/t gold from 40.6 metres depth, confirming locally bonanza-grade mineralisation near existing workings. The shallow intercept, from underground drilling rather than surface, suggests potential for rapid incorporation into the current mine plan with limited additional development. For geotechnical and mine planning teams, the result supports tighter stope design around high-grade shoots and may justify re-optimising ground support and sequencing in this sector of the orebody.

About 15,000t of concrete from the demolished turbine alternator plinths at Sizewell A is being crushed and graded for reuse as sub-base material for foundation platforms at the Sizewell C nuclear project. Using this on-site recycled aggregate will reduce primary quarried aggregate demand and heavy lorry movements to the Suffolk coast site, cutting embodied carbon and local traffic impacts. Geotechnical teams will need to verify grading, compaction behaviour and durability of the recycled concrete to meet nuclear foundation performance and QA requirements.

Construction of the second Gotthard road tunnel in Switzerland involves driving a parallel bore through hard Alpine rock and significant fault zones while working within a tightly constrained existing portal and operational highway. Engineers must stage excavation and lining works to avoid disrupting the first tunnel, manage faulted ground with targeted reinforcement and waterproofing, and sequence logistics in limited laydown and access areas. Ambitious circularity targets are pushing reuse of excavated rock in concrete and aggregates, demanding strict material characterisation and on-site processing strategies.

Plans to widen and reconfigure two major roundabouts on the A52 south of Nottingham have been signed off by the secretary of state following a public inquiry, allowing the final phase of the corridor’s long‑running upgrade to proceed. The scheme will increase circulatory and approach lane capacity on both junctions and introduce improved pedestrian and cyclist crossings. Designers will need to manage tie‑ins to existing A52 dual carriageway geometry, maintain traffic flows during construction and address drainage and pavement strengthening for higher traffic loads.

Ground engineering and piling for the replacement of the 60-year-old Clifton Bridge over the M6 in Cumbria have been completed by Cementation Skanska, allowing the project to move into the bridge installation phase. The works prepare foundations for a new structure spanning the motorway, replacing ageing 1960s infrastructure that carries local traffic over one of the UK’s busiest north–south corridors. For geotechnical teams, the milestone signals that substructure risks are largely retired and attention will now shift to superstructure erection and traffic management constraints over live motorway lanes.

Knighthead Capital Management has unveiled concept images for a new 62,000‑seat Birmingham City FC stadium within the proposed Birmingham Sports Quarter at Bordesley Green. The large-capacity bowl will be the centrepiece of a wider mixed-use redevelopment, with the scale implying major transport, geotechnical and utilities upgrades on a constrained urban site. Early-stage design decisions on structural framing, roof span and crowd circulation will be critical for meeting Premier League and UEFA standards while managing buildability and phased construction around existing infrastructure.

BS 30417 introduces the UK’s first formal standard for inclusive PPE sizing and fit, moving away from legacy designs based on a single “average man” template. The standard sets out anthropometric measurement guidance, fit-test protocols and size-range requirements so items such as fall-arrest harnesses, hi-vis garments and safety footwear can accommodate women, ethnic minorities and workers with non-standard body shapes. For contractors and asset owners, it signals future procurement specifications where PPE suppliers must evidence compliant size ranges and documented fit assessments rather than offering limited S–XL ranges.

A 15m-diameter vertical shaft sinking machine, claimed as Europe’s largest of its type, has started excavating at National Grid’s Tilbury site to construct a new cable tunnel beneath the River Thames between Tilbury and Gravesend. The shaft will form the main access and cable route for replacing a 1960s transmission tunnel, enabling modern high-voltage circuits to be installed at greater depth and with improved flood resilience. Contractors will need to manage large excavation volumes, groundwater control and segmental lining tolerances for a very wide, deep vertical shaft in complex Thames alluvium and terrace gravels.

The UK High Court has found BHP Group liable for the 2015 failure of the Fundão tailings dam in Mariana, Brazil, which killed 19 people and polluted around 600km of the Rio Doce and coastal waterways. The ruling concerns the collapse of an upstream tailings structure jointly owned via Samarco, which released tens of millions of cubic metres of iron ore waste and devastated multiple downstream communities. The judgment opens the door to large-scale civil claims in England, sharpening scrutiny of tailings design, monitoring and governance for UK-listed miners operating overseas.

National Highways has identified 182 outfalls and soakaways on the Strategic Road Network that will be remediated for polluted road runoff by 2030, following pressure from river and water quality campaigners. The published list covers priority discharge points where runoff currently enters sensitive watercourses without adequate treatment, enabling targeted design of retrofit SuDS, settlement ponds, filters and upgraded soakaway systems. For civil and geotechnical teams, this signals a pipeline of brownfield drainage works involving constrained verges, high-traffic possessions and complex ground–water interface design.

Channel Tunnel owner Eurotunnel is cancelling all planned UK rail infrastructure investments after warning its business rates are set to almost triple from 2026, describing the increase as “unparalleled” for a single asset. The company, which operates the 50 km fixed link between Folkestone and Coquelles and handles both high-speed passenger and freight traffic, says the tax shock undermines the business case for new terminals, sidings and capacity upgrades. For UK rail engineers, this signals potential delays to cross-Channel capacity enhancements and associated track, signalling and terminal works on the British side.

Surge Copper has started pre-feasibility work on its Berg copper-molybdenum-silver project in west-central British Columbia, advancing studies on open-pit mine design, process plant configuration and infrastructure options tied to its existing Ootsa land package. The TSXV-listed junior is updating resource models, metallurgical testwork and pit optimisation to refine throughput, strip ratios and concentrate quality ahead of the PFS. For engineers, the key watchpoints will be geotechnical parameters for large-scale pit slopes, tailings and water management concepts, and potential synergies with nearby Huckleberry infrastructure.

Aris Mining will pay US$80 million to acquire full ownership of the Soto Norte gold project in Colombia, positioning the company to target production of around 1 million oz of gold per year. The deal consolidates Aris’s interest in one of the country’s largest undeveloped underground gold assets, located in Santander department near the historic California-Vetas mining district. For mine planners and investors, the transaction signals intent to advance a large-scale, long-life operation in a jurisdiction already hosting significant high-grade underground gold mining.

High-grade tungsten mineralisation has been intersected at Larvotto Resources’ Hillgrove project in New South Wales, adding a second critical metal to a site already known for antimony. Managing director Ron Heeks describes antimony as caught in a “perfect storm” of falling global mine output and rapidly rising demand from defence and energy-storage sectors, positioning Hillgrove’s combined antimony–tungsten potential as strategically significant. For mine planners and metallurgists, the find raises questions on future polymetallic flowsheet design and prioritisation of drilling to define tungsten resources alongside existing antimony targets.

Ivanhoe Mines has signed a memorandum of understanding with the Qatar Investment Authority under which Qatar’s sovereign wealth fund will back Ivanhoe’s management in pursuing existing and new critical minerals projects in Africa. The collaboration targets large-scale copper, nickel and other battery-metal deposits across Ivanhoe’s pipeline, building on assets such as Kamoa-Kakula in the DRC. For engineers and project developers, the deal signals potential acceleration of feasibility studies, project financing and infrastructure build-out on African critical minerals hubs.

The US Defense Logistics Agency has reopened a $500 million tender to buy up to 7,500 tonnes of cobalt after benchmark prices more than tripled since mid-August. The agency first sought offers in August but is now reissuing the procurement as spot market volatility and tight supply complicate long-term contracting. For miners and refiners, the move signals sustained US strategic demand for cobalt metal and intermediates, with potential upside for projects able to deliver secure, traceable supply into government stockpiles.

Holcim UK’s readymix concrete division managing director Alastair Meyers is calling for environmental product declarations (EPDs) to be made a legal requirement on all UK construction projects, arguing they are essential to meeting national net zero targets and eliminating greenwashing. EPDs, which can report up to 37 indicators including carbon footprint, energy use and waste, are already widely used in Europe but remain voluntary in the UK. Meyers says mandatory EPDs would enable like-for-like material comparisons, standardise assessment frameworks, and notes Holcim can already generate digital, on‑demand EPDs across its UK operations.

More than 15,000 tonnes of crushed concrete from the demolished turbine alternator plinths at Sizewell A has been certified to WRAP quality protocol and reused as sub-base for foundation platforms in the Sizewell C main construction area, just a few hundred metres away. Nuclear Restoration Services and Sizewell C report the material transfers are complete, avoiding landfill and an estimated 28 tonnes of CO₂ while cutting heavy truck movements through East Suffolk. The reuse scheme was initiated by the Environment Agency and East Suffolk Council as part of a wider push for circular decommissioning practice on nuclear sites.

Birmingham City Council has resolved to approve Hartwell’s £100m Phoenix Yard scheme, redeveloping a 2.8‑acre former ironworks at the Digbeth gateway into 188,031 sq ft (17,467 sq m) of creative, media, educational and commercial space plus 240 residential units. Designed by Allford Hall Monaghan Morris, the buildings target BREEAM Excellent, EPC A, WELL, WiredScore Platinum, SmartScore and at least 10% biodiversity net gain, signalling high-performance envelopes and services. The project sits alongside HS2, the Metro Eastside expansion and the BBC’s new Typhoo Wharf hub, intensifying regeneration pressures on local infrastructure and utilities.

Homes England has taken a 40% stake in a new £860m housing joint venture, the Impact and Places Partnership, with Swiss Life Asset Managers and Capital & Centric holding the remaining 60%. The JV plans to deliver more than 2,250 mixed-use, residential-led units over the next decade in underinvested areas across England, with a focus on supporting small and medium-sized developers. For planners and infrastructure teams, the programme signals a pipeline of brownfield regeneration and associated utilities, transport links and groundworks packages.

England delivered 208,600 net additional dwellings in 2024/25—190,600 new builds plus 22,640 from change of use, conversions and other gains, minus 4,630 demolitions—marking a 6% fall on 2023/24 and the third consecutive annual decline. BCIS chief economist David Crosthwaite estimates only about 1 million homes will be delivered over the parliament on the current trajectory, far short of the 1.5 million target, with 275,600 net additions since July 2024. MPs are pressing for a delayed long-term housing strategy and budget measures to unlock “billions” in public and private investment.