Geomechanics.io

Rising water levels in Kenya’s Lake Naivasha have submerged large parts of Kihoto estate, displacing about 7,000 people and forcing the use of tourist boats for evacuation as access roads and ground floors are inundated. Local officials report that the lake has been rising for more than a decade, with recent levels overtopping informal embankments and flooding masonry houses, pit latrines and septic systems. Geotechnical concerns now centre on saturated foundations, slope instability on reclaimed lakebed plots, and contamination risks from submerged sanitation infrastructure.

Mount Semeru in East Java has been raised to the highest alert level after entering a new phase of intense activity, with ash columns reported above several kilometres and villages blanketed in thick deposits. Authorities have ordered mass evacuations from settlements on the volcano’s flanks and along key river valleys that previously channelled lahars in the 2021 eruption. For geotechnical and civil teams, priority issues are ash loading on lightweight roofs, rapid assessment of slope stability on ash-covered road embankments, and lahar risk to bridges and culverts.

Central Alabama Water signalled it will stick with its existing Lake Purdy Dam stabilisation concept after its board heard conflicting expert recommendations on alternative designs. Vice Chair Phillip Wiedmeyer said the utility intends to proceed with the current plan, despite consultants presenting differing approaches to address the dam’s stability and safety margins. The decision keeps design assumptions and geotechnical investigation scope unchanged for now, affecting timelines for any foundation treatment, embankment works or spillway modifications.

Simex is launching the second-generation ART 1000 GEN II road maintenance attachment, designed for in-situ regeneration of asphalt with zero waste by milling, mixing and relaying material in a single pass. The patented unit, supplied locally by Total Rockbreaking Solutions, mounts on standard carriers and treats only the damaged lane area, avoiding full-depth reconstruction and reducing haulage of spoil and new asphalt. For pavement engineers, the system targets faster patching cycles, lower material consumption and improved lifecycle performance on heavily trafficked urban and arterial roads.

VEGA is promoting non-contact, maintenance-free level monitoring for crushed limestone and cement handling, using radar-based sensors across quarrying, crushing, mixing and stockpiling operations. The systems are designed to cope with dust, build-up and variable bulk densities typical of silos, hoppers and stockpiles, avoiding mechanical floats or ultrasonic units that require frequent cleaning and recalibration. For road and infrastructure plants, this enables tighter control of feed rates and inventory in high-throughput cement and aggregate circuits, with fewer shutdowns for sensor access.

Nominations remain open for the Queensland Government’s School Transport Infrastructure Program, which funds road safety upgrades and active transport links around state schools. Eligible schools have until next week to apply for works such as reconfigured drop-off and parking facilities, upgraded bus set-down and pick-up zones, and new or widened bikeways. Designers should expect projects focused on traffic calming, safer pedestrian–vehicle interfaces and segregated cycling access in constrained school-frontage corridors.

Replacement of the 1950s Wye River Bridge on the Great Ocean Road between Lorne and Apollo Bay has been completed as a $14.86 million upgrade, jointly funded by $4.05 million from the Federal Safer Local Roads and Infrastructure Program and $10.81 million from the Victorian Government. The new structure replaces ageing coastal bridge infrastructure on a key tourist and freight route exposed to high wave, wind and corrosion loads. For designers and asset managers, the project signals continued investment in resilient coastal bridge renewals on constrained, landslip-prone corridors.

Bell Equipment is rolling out an agnostic safety and autonomy platform across its articulated dump trucks and motor graders, built around its Fleetm@tic telematics system for real-time machine monitoring and control. The integrated package links collision avoidance, stability control and production tracking into a single interface, allowing mixed-fleet operations rather than locking contractors into one OEM ecosystem. For civil and mining earthworks, this enables tighter haul cycle management, better utilisation data and more consistent operator behaviour on large road and infrastructure projects.

Final designs for the Newport Level Crossing Removal Project in Victoria confirm new rail bridges to carry both passenger and freight services over Maddox Road, plus a separate pedestrian and cycling bridge at Champion Road. The works will eliminate two road-rail conflicts on this busy corridor, removing boom gates and redistributing vertical alignment to grade-separate traffic from rail operations. For designers and contractors, key tasks will centre on bridge substructure in a constrained urban environment and maintaining rail operations during staged construction.

The third stage of the Gold Coast Light Rail in Queensland has reached a key commissioning milestone, with the first tram running over newly laid track on the project’s northern section. The initial trial run precedes controlled night-time testing scheduled to start at the end of this month, allowing validation of track geometry, overhead wiring and signalling under low-traffic conditions. For civil and rail engineers, this marks the transition from track construction to systems integration and dynamic performance checks ahead of full service.

Secmair is expanding its road maintenance and surfacing equipment footprint from its French base to 120 countries, with growing uptake across Australia and wider Oceania. Local dealer and representative Darryl Byrne points to its specialised chipsealing and spray-sealing units as the core products building market share in regional and urban networks. For asset owners and contractors, the push signals more competition in high-precision bitumen sprayers and integrated sealing trains, relevant for extending pavement life on heavily trafficked arterial and freight routes.

Civilcast, founded in 2010 by civil construction veteran John McQuaid, has expanded into a national supplier of precast pits, access covers and drainage structures for road and utility projects across Australia’s infrastructure boom. The company focuses on custom precast solutions that integrate with complex services layouts and varying load classes, rather than only catalogue components. For designers and contractors, the key value is shortened lead times on non-standard elements and consistent compliance with local authority and AS/NZS requirements across multiple states.

Bielby Holdings is expanding its compaction fleet with new Dynapac machines supplied by CEA, building on an 18‑year relationship that began when the contractor first standardised on Dynapac rollers after comparative trials. The latest acquisitions include high-frequency vibratory rollers and soil compactors configured for road and bulk earthworks, aimed at achieving specified densities in fewer passes and reducing fuel burn per cubic metre compacted. For civil contractors, the move signals continued confidence in OEM-supported, single-brand fleets for large pavement and embankment programmes.

MP Materials has formed a Saudi rare earth refinery joint venture with Maaden and the US Department of War, with MP and DoW holding 49% and Maaden at least 51%, sending MP’s shares up 8.2% and its market capitalisation to nearly $11 billion. The DoW will fully finance the US equity stake, while MP contributes separation and refining know-how drawn from its Mountain Pass mine and processing complex in California and its magnet plant in Texas. The refinery will process Saudi and imported feedstock into separated light and heavy rare earth oxides for US, Saudi and allied defence and manufacturing supply chains, with magnet manufacturing collaboration in the kingdom under discussion.

IGO has ruled out any viable path for the Kwinana lithium hydroxide refinery in Western Australia, after three years of operation delivered only 35% of nameplate capacity on average and a September-quarter EBITDA loss of A$19.6 million despite lifting output to 2,775 tonnes at A$14,177/t conversion cost. CEO Ivan Vella cited structurally high Australian energy and labour costs and the lack of downstream processing clusters, arguing that even at full nameplate the asset would remain uneconomic. By contrast, TLEA’s 51%-owned Greenbushes mine produced 1.48Mt of spodumene concentrate at A$325/t, generating A$1.5 billion cashflow and a 66% EBITDA margin, with Chemical Grade Plant 3 set to add 500,000t/y capacity by year-end.

Fortuna Mining has lifted Séguéla’s proven and probable reserves to 13 million tonnes at 2.81 g/t for 1.2 million oz. and doubled indicated resources to 6 million tonnes at 4.12 g/t, extending life of mine to 7.5 years and triggering expansion studies in Côte d’Ivoire. Technical work is assessing a 25% plant capacity increase from the 1.25 Mt/y 2023 design to 2–2.5 Mt/y, with low-capex debottlenecking targeting 1.75 Mt/y throughput in 2026. Kingfisher now contributes 3.5 Mt at 2.28 g/t in reserves and the Sunbird underground project holds 3.6 Mt at 4.34 g/t indicated, pending an underground mining study next month.

Mineral Resources has scrapped its mid-2026 succession deadline, keeping founder and managing director Chris Ellison in place while it designs a three-stage leadership transition with Korn Ferry and HR consultancy Xperience, shifting to a more traditional CEO-led structure and formalised executive team practices. New chairman Malcolm Bundey has led a full board refresh, adding four independent directors including former Origin Energy CFO Lawrie Tremaine and ex-Macmahon CEO Ross Carroll, plus a new director of governance and compliance. Strategically, MinRes is prioritising ramp-up of the Onslow Iron project, debt reduction, and a A$765 million sale of 30% of its lithium business to POSCO Holdings.

Northern Graphite has halted mining and milling at its Lac des Iles operation in Quebec after a mill bearing failure, using the four- to six-week replacement window to pull forward January maintenance tied to a new pit development. The 35-year-old mine, North America’s only graphite producer, currently outputs about 15,000 tonnes of concentrate annually with installed capacity of 25,000 tonnes, and is advancing a Phase 1 pit expansion supported by C$6.22 million in federal funding. Mining has already reached the permitted 209 m elevation, and inadvertent blasting slightly below this level has paused pit operations pending impact checks and a minor permit amendment, risking a two- to three-month production gap before the new pit starts, targeted for Q2 2026.

Allied Critical Metals has tripled measured and indicated resources at its Borralha tungsten project in northern Portugal to 13 million tonnes at 0.21% WO₃, plus 7.7 million tonnes inferred at 0.18% WO₃, following 4,210 metres of Phase 1 core drilling in the Santa Helena Breccia. The 3.8 sq. km brownfield site previously produced over 10,280 tonnes of wolframite concentrate at an average 66% WO₃ between 1904 and 1985, giving strong reconciliation data for future mine design. A PEA and key environmental and permitting decisions are targeted for Q1 2026.

Rio Tinto will cut output at its Yarwun alumina refinery in Gladstone by 40% from October 2026, removing about 1.2 million tonnes per year from the market to extend the plant’s life to 2035 amid alumina prices around $340 per tonne, less than half last year’s $800 spike. The move is driven by tailings-storage constraints, with the existing facility projected to hit capacity by 2031 and a second storage area deemed uneconomic in current conditions. About 180 of 725 jobs will be affected as Rio trials adjusted deposition patterns, higher compaction and drying efficiencies, and enhanced residue stacking to safely increase containment capacity.

American Rare Earths has lifted the Cowboy State mine resource within the Halleck Creek project in Wyoming to about 547.5 million tonnes at a 1,000 ppm TREO cut-off, following 18 new channel samples and expanded geological mapping. Around 63.9 million tonnes have been upgraded from inferred to indicated, and two new Wyoming Department of Environmental Quality permits allow 27 in-fill drill holes to support prefeasibility and subsequent technical studies. The project also benefits from up to $7.1 million in state-backed, non-dilutive funding to advance mine development.

Ivanhoe Mines has officially opened the $2 billion Platreef platinum-palladium-rhodium-gold mine in Limpopo, feeding first ore to the stage-one concentrator on 29 October and producing first concentrate during the ribbon-cutting attended by President Cyril Ramaphosa. The operation targets about 100,000 oz per year of PGMs plus gold from the 18–26 m thick Flatreef orebody using mechanised bulk mining, with economic studies indicating an after-tax NPV (8%) rising from $1.4 billion to $3.2 billion and IRR from 20% to 25% as stages two and three come online. Local protests over jobs and benefits, despite over 2,000 nearby residents already employed and a 26% broad-based Black economic empowerment stake, signal ongoing scrutiny as expansions proceed into a platinum market WPIC now sees swinging from a 692,000-oz 2025 deficit to a 20,000-oz surplus in 2026.