Above photo: Ken Bower.
The Toxic Legacy of Eighty Years of U.S. Military Occupation.
Part 2 of a 3-part series. Part 1 examined PFAS at Pituffik Space Base; while Part 3 will survey the appeals U.S. veterans have filed with the U.S. Veterans Administration, claiming cancers and disease as a result of their exposure to toxins in Greenland.
“Greenland doesn’t really help Denmark. Denmark doesn’t spend money to really help Greenland, but it’s important for the United States… It should be controlled by the United States, not by Denmark.” — U.S. President Donald Trump, speaking in Ankara, Türkiye, July 7, 2026.
President Donald Trump’s July 2026 remarks criticizing Denmark’s relationship with Greenland provide an unexpected backdrop for this report. Although the President did not specify what he meant by Denmark “not spending money to really help Greenland,” his comments invite a broader examination of the responsibilities that accompany the American military presence and strategic interest on the world’s largest island.
The geopolitical tensions have been extraordinary. Following President Trump’s repeated suggestions earlier this year that he might use military force to acquire Greenland, Danish military planners reportedly developed highly classified contingency plans that included destroying key Greenlandic airfields if the United States attempted an invasion, according to the BBC.
On April 1, 2026, The New York Times reported that the Trump administration was negotiating with Denmark for access to three additional military installations in Greenland. According to the newspaper, two of the proposed sites were former American bases abandoned following the Cold War. The report underscored Greenland’s renewed strategic importance at a moment when many of the environmental consequences of earlier U.S. military operations remain unresolved.
For more than eighty years, the United States has maintained an extensive network of military installations across Greenland. Those bases left behind nuclear radiation, fuel spills, abandoned infrastructure, military waste, contaminated landfills, PCB-containing materials, asbestos, unexploded ordnance, and, at several locations, documented PFAS contamination associated with firefighting activities.
Successive Danish and Greenlandic governments have invested substantial public resources investigating former American installations, documenting contamination, and, in some rare cases, undertaking cleanup projects. The United States has strongly maintained that it bears no legal obligation to restore former facilities to their original condition, relying on provisions contained in Article XI of the 1951 Defense Agreement: “It is understood that any areas or facilities made available to the Government of the United States of America under this Agreement need not be left in the condition in which they were at the time they were thus made available.”
As a result, almost all of the financial burden for assessing and addressing contamination has fallen on Denmark and Greenland rather than on the guilty party that established and operated the installations.
When the U.S. upgraded its radar systems in 2004, Greenland attempted to compel the United States to clean up former U.S. bases on the island. U.S. Secretary of State Colin Powell stated that the legal responsibility for cleaning up older, abandoned bases had already transferred to local/Danish authorities and would remain there. Because the U.S. maintained this legal stance, the Danish government ultimately agreed to pay for the cleanup.
In 2018 the Danish government relented by investing around 24 million Euro to “clean-up” the abandoned bases. It is a paltry sum. By 2024, progress on the clean-up had been slow. Only around 5.3 million Euro has been spent. That figure is almost irrelevant when measured against the scale of cleaning up the horror at Camp Century alone.
No public authority has produced a comprehensive cleanup estimate for Camp Century. Given the scale of the buried infrastructure, the Arctic environment, and the costs associated with excavating, transporting, and disposing of radioactive and hazardous materials, the eventual cost could reasonably reach into the billions of euros.
This report provides a consolidated overview of former United States military installations in Greenland and their documented environmental legacy. It is based primarily on the groundbreaking investigative reporting and field research published by the Danish newspaper Politiken supplemented by publicly available reports from the Government of Greenland, the Geological Survey of Denmark and Greenland (GEUS), NIRAS, U.S. government agencies, scientific literature, and historical records.
Military Poisons is indebted to the journalists, editors, photographers, and researchers at Politiken for their exceptional work documenting the environmental legacy of former U.S. military activities in Greenland. Their reporting has significantly advanced public understanding of these historically important sites and provided an invaluable foundation for further research.
The individual descriptions of each installation have been substantially condensed from the original source material to provide readers with a concise reference to the history, environmental conditions, and current status of each site. While every effort has been made to accurately reflect the available public record, this report is intended as a summary and research aid rather than a substitute for the original investigations and technical reports.
Taken together, these installations reveal a remarkably consistent pattern spanning more than eight decades of American military operations in Greenland. Facilities ranging from major air bases to isolated weather stations and LORAN navigation sites were frequently abandoned with fuel drums, vehicles, construction materials, electrical equipment, batteries, hazardous building materials, and waste disposal areas left in place. Environmental investigations have repeatedly documented petroleum contamination, Polychlorinated biphenyls PCBs, asbestos, mercury, lead, cadmium, and other heavy metals, while many sites remain only partially characterized because comprehensive environmental assessments have never been completed. Camp Century occupies a category of its own. Unlike the conventional military installations scattered across Greenland, the underground nuclear-powered base left behind highly toxic radioactive waste, diesel fuel, sewage, and thousands of tons of construction materials beneath the Greenland Ice Sheet.
One of the more striking findings is how unevenly these sites have been investigated. A few former bases have undergone detailed engineering studies involving soil, water, sediment, and waste characterization. Others have received only scant historical inventories documenting visible structures and debris. Several installations—including Camp Tuto, Camp Fistclench, the Ice Cap Sites, and a number of protected-area weather stations—have never undergone comprehensive environmental assessments.
Cleanup efforts have likewise been inconsistent. Denmark initiated a political agreement in 2018 to begin addressing contamination at selected former American installations, but remediation has progressed slowly. Several major sites remain only partially cleaned despite years of planning. Other installations, including Pituffik Space Base and several research camps within the active military reservation, are excluded from testing and remediation because they remain operational. Somehow, sharing environmental secrets involving levels of PCB’s, PFAS, Radiation, and Mercury are matters of national security. The same holds true from Weisbaden, Germany to Yokosuka, Japan to Honolulu, Hawaii. Victims in these locations cry out for data and justice.
As Greenland assumes greater strategic importance and climate change accelerates the exposure of long-buried Cold War infrastructure, the environmental legacy of former U.S. military installations is likely to receive increasing international attention. This report seeks to provide a concise, evidence-based reference to what is presently known about these sites, where significant uncertainties remain, and where additional investigation is long overdue.
What’s in a drum?
Throughout Greenland, former American military installations are littered with hundreds of thousands of abandoned steel fuel drums. Many reportedly contained residual gasoline, kerosene, diesel fuel, lubricating oil, or other petroleum products when they were discarded. As these drums corrode over time, residual fuels and additives leach into surrounding soils and surface waters. Among the contaminants of greatest concern are petroleum hydrocarbons and volatile organic compounds, particularly the BTEX chemicals—benzene, toluene, ethylbenzene, and xylenes—along with polycyclic aromatic hydrocarbons (PAHs) and other fuel constituents, like PCB’s. See our rundown on the 36 contaminated sites below.
