Mammoet Relocates 3,900-Ton Dragline Across Texas Using SPMTs

30Second Takeaway

Mammoet’s Texas team has successfully completed the relocation of a 3,900-ton dragline over a distance of nearly 24 kilometres (15 miles) to a new mining site. The complex operation involved crossing a state highway, navigating a creek and passing beneath multiple high-voltage power lines, demonstrating advanced planning, precision execution and heavy transport expertise using Self-Propelled Modular Transporters (SPMTs).

Moving the World’s Heaviest Mining Equipment

Draglines are among the heaviest machines used in modern mining operations, playing a critical role in large-scale surface mining. Relocating equipment of this size is rarely straightforward and requires a combination of engineered transport solutions, extensive route planning and close coordination with authorities and site stakeholders.

Heavy transport projects of this magnitude highlight the growing importance of specialised transport engineering, particularly as mining operators seek to optimise assets by relocating equipment rather than decommissioning and rebuilding.

Preparing the Dragline for Transport

Before the relocation could begin, Mammoet’s team carefully elevated the dragline by approximately 1.5 metres (5 feet) to allow it to be positioned onto SPMTs. This step was critical to ensuring even load distribution and maintaining stability throughout the transport process.

SPMTs were selected for the operation due to their ability to handle extreme weights with precision, offering controlled movement and adaptability across varying terrain conditions.

Managing Weather and Terrain Challenges

The relocation presented multiple challenges beyond sheer weight and distance. Unpredictable weather conditions, including periods of heavy rain and dense fog, added complexity to the move. Saturated ground conditions resulted in muddy terrain, requiring continuous reassessment of traction, ground bearing capacity and progress rates.

Mammoet’s transport team worked closely with site engineers to adapt the execution plan as conditions changed, ensuring safety and efficiency were maintained throughout the operation. Despite these challenges, the relocation was completed with minimal disruption and remained within the planned schedule.

Crossing Infrastructure and Environmental Constraints

One of the most sensitive phases of the project involved crossing a state highway. Traffic management teams were deployed to temporarily stop vehicular movement, allowing the dragline to pass safely without risk to road users or personnel.

The route also included a small creek crossing, which required temporary ground reinforcement to support the dragline’s load while protecting the surrounding environment. Careful engineering ensured that the crossing was completed without environmental impact.

Navigating Beneath High-Voltage Power Lines

Another critical challenge involved manoeuvring the dragline beneath four major high-voltage power lines. Clearances were calculated and monitored to the centimetre to eliminate any risk to infrastructure or personnel.

Mammoet collaborated closely with utility providers to establish safety protocols and verify clearance limits before proceeding. This coordination was essential to executing the move safely and without interruption.

Engineering, Planning and Execution

Relocating a dragline of this size requires months of preparation, including route surveys, ground assessments, engineering calculations and coordination with local authorities. Each stage of the operation from lifting and transport to infrastructure crossings—was carefully sequenced to minimise risk.

The successful completion of the project reinforces Mammoet’s capability in delivering large-scale heavy transport solutions under challenging conditions.

About Mammoet

Mammoet is a global leader in heavy lifting and specialised transport, supporting complex projects across mining, energy, infrastructure and industrial sectors. The company combines engineering expertise, advanced equipment and experienced teams to deliver safe and efficient solutions for some of the world’s heaviest and most challenging loads.

Visit website: https://www.mammoet.com

Frequently Asked Questions

How heavy was the dragline that was relocated?

The dragline weighed approximately 3,900 tonnes, making it one of the heaviest machines commonly relocated in mining operations.

What transport method was used?

The dragline was transported using Self-Propelled Modular Transporters (SPMTs), which provide precise control and load distribution for extreme weights.

How far was the dragline moved?

The relocation covered a distance of nearly 24 kilometres (15 miles).

What were the main challenges of the project?

Key challenges included adverse weather, muddy terrain, a state highway crossing, a creek crossing and navigating beneath multiple high-voltage power lines.

Why relocate a dragline instead of replacing it?

Relocating existing equipment allows mining operators to maximise asset value while avoiding the cost and time required to build or install new machinery.