EPICA required the capability to perform ice core drilling at Little Dome Concordia (Little Dome C), Antarctica—an environment unlike almost any other on earth. At over 3,000 meters above sea level, with average yearly temperatures around -52°C and extreme lows near -80°C, the site presents formidable challenges. Despite these extremes, conditions are surprisingly stable, with very low wind speeds and minimal precipitation. These unusual environmental factors required specialised engineering solutions for shelter design and operation.
The drilling mast required for ice extraction is exceptionally long, meaning it must be pivoted horizontally whenever additional drill sections are attached. To support this, we adapted one of our standard Series 4 shelters by creating a unique roof slot that allowed the mast to extend to its full height. Mounted on a pivot just above ground level, the mast could be operated safely and effectively. This represented an innovative and bespoke structural modification for the project.
Preserving 700,000-Year-Old Ice with Controlled Shelter Environment
Protecting the ancient ice cores was critical, requiring the shelter to remain well below freezing at all times. While summer conditions at Little Dome C can reach -25°C, solar gain presented an additional challenge. To address this, we used specialist fabric with very low insulating properties, ensuring interior temperatures stayed far below freezing. The material also allowed natural light to pass through, helping the research team conserve energy while still maintaining protection for fragile, irreplaceable ice samples.
30-Foot-Wide Series 4 Truss Provides Strength and Flexibility
The shelter design was based on our 30-foot-wide Series 4 Truss system, offering exceptional structural strength and long-term adaptability. Though wind and snow loads at Little Dome C are comparatively low, this robust system provided confidence and resilience for extended operations. Additionally, the shelter design allowed for future repurposing in other challenging environments or changes in operational use. Large bespoke barn doors were also engineered, providing essential access for vehicles, drilling equipment, and heavy machinery.
Drill Mast Access Slot Engineered for Safe, Reliable Operation
The defining bespoke feature of this Series 4 Truss shelter was the roof slot, designed to accommodate the extended drill mast. Our engineering team created a reinforced solution that integrated seamlessly into the overall structure. Through rigorous Finite Element Stress analyses and multiple rounds of validation and verification, we ensured the slot maintained structural integrity under extreme conditions. This careful engineering allowed safe mast operation without compromising the strength or durability of the shelter itself.
Seasonal Cover Solution Ensures Shelter Longevity and Energy Efficiency
During extended winter shutdowns when the drill mast is not in use, the exposed roof slot required weather protection. To address this, we developed a simple but effective cover system designed to pull tightly over the opening. When operational, the cover could be easily removed, allowing both mast access and natural solar heat to escape the shelter. This straightforward design ensured both protection and efficiency, helping extend the usability and lifespan of the installation.
Comfortable On-Site Accommodation with Insulated Series 4 Shelters
Alongside the drill shelter, we supplied several 20-foot-wide Series 4 insulated shelters to serve as staff living quarters. Despite the extreme Antarctic environment, these structures proved simple, robust, and reliable. With basic heating such as a stove and some modest furnishings, the shelters offered researchers a surprisingly comfortable and homely environment. This balance of rugged engineering with human comfort allowed the team to work and live directly at their remote drilling site for extended missions.
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Client feedback
Research Associate
‘This drill shelter has performed excellently for several years now, many thanks’
Beyond EPICA
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