Mustard Gas and Mock Nukes: 5 Surprising Secrets of Fort McClellan’s Pelham Range
For decades, the dense pine forests of Pelham Range served as the epicenter of the U.S. Army Chemical School. It was a place where Cold War readiness was forged through exposure to the world’s most feared substances. But as the 1995 Base Realignment and Closure (BRAC) process began to dismantle Fort McClellan, a darker environmental legacy emerged from the Alabama red clay.The "Toxic Gas Area" wasn't just a name—it was a literal description of a landscape saturated with chemical agents, radioactive isotopes, and unexploded ordnance. As these parcels are scrutinized for transfer to the National Guard or the public, investigative reports have revealed the high-stakes audacity of a training ground that once simulated the end of the world.
1. The "Atomic Pond" and Simulated Nuclear Fallout
During the 1950s, the Chemical Corps didn't just teach soldiers how to survive a nuclear strike; they built a mock wasteland to prove it. At Station No. 5—officially known as Range L—instructors created a man-made crater known as "Lima Pond."To simulate "residue from an atomic bomb," live radioactive sources were placed within the crater. Trainees were forced to navigate this simulated nuclear "ground zero," using Geiger counters to map the invisible lethality of the pond. While the radioactive materials have since been removed, the existence of a mock-atomic blast site in rural Alabama remains a chilling reminder of the era's training intensity.
2. The Gauntlet: A Seven-Station Chemical Obstacle Course
From 1955 to 1963, the Army operated a "chemical obstacle course" designed to overwhelm the senses. This was no mere exercise in physical endurance; it was a seven-station gauntlet where soldiers were exposed to a rotating menu of toxic simulants and riot control agents.The course utilized a sophisticated array of chemicals across specific stations:
- Stations 1 & 2: Chloroacetophenone (CN) and adamsite (DM) grenades.
- Stations 3 & 4: Phosgene (CG) and chloropicrin (PS), coupled with M117 booby-trap simulators.
- Station 7: A volatile cocktail of incendiaries and explosives.The training was so thorough that it concluded at a truck-mounted personnel decontamination station where soldiers performed rigorous face and hand washing to scrub away the day’s exposure. As noted in the 2004 Site Investigation Report:"Station No. 7 included white phosphorous, M-15 smoke grenades, HC (mixture of hexachloroethane, aluminum powder, and zinc oxide) smoke grenades, blocks of nitrostarch, M2 flame throwers, electric blasting caps, M5 smoke pots, shell simulators, and pentaerythritol tetranitrate (PETN) detonating cord."
3. Real Mustard vs. "Molasses Mustard"
The stakes reached their peak at Station No. 6 and the surrounding Decontamination Training Area. Here, the Army utilized sulfur mustard, a potent blistering agent. Trainees worked with two forms: "distilled mustard (HD)" and the syrupy, highly persistent "molasses residuum mustard (MR)."Just south of the main course, instructors conducted exercises that would be unthinkable today. They contaminated two World War II-era motorized tanks with actual chemical agent mustard (H). Soldiers then attempted to decontaminate the heavy armor using "decontamination agent noncorrosive (DANC)" or a "supertropical bleach (STB)" slurry.Sulfur mustard is notoriously difficult to eradicate. According to the Agency for Toxic Substances and Disease Registry (ATSDR), this substance can persist in the environment for years, particularly if buried in soil. For decades, the excess agent and caustic decontaminants were disposed of in burial pits near the training sites, creating long-term toxicological "hot spots" that remain a primary focus for modern remediation teams.
4. The Great Regulatory Standoff: Army vs. EPA
In 1998, as the Army prepared to shutter the post, a bureaucratic war erupted. The Army’s Environmental Baseline Survey (EBS) made the bold claim that the Pelham ranges contained "no hazardous substances" or petroleum products.The response from the EPA and the Alabama Department of Environmental Management (ADEM) was swift and scathing. Regulators pointed out the inherent irony: how could a "Toxic Gas Area" be labeled free of hazardous substances? ADEM specifically cited "known releases" of lead at pistol ranges and explosives like TNT and RDX in the soil and sediment from years of artillery fire.Because of this friction, the regulators insisted on classifying the ranges as "Category 7" parcels—the highest risk designation available. This classification effectively blocked any rapid land transfer, forcing the Army to acknowledge that decades of chemical warfare drills could not be wiped from the books with a simple survey.
5. The Hidden Map of Contamination
Decades after the last smoke grenade was pulled, the land still holds the physical remnants of its "toxic" history. A 2004 Site Investigation of Parcels 211 and 207 uncovered a graveyard of military hardware. Near the old Station No. 7, teams discovered a fragment of an M2 flame-thrower, while other areas yielded four 5- by 3-foot spray tanks labeled "Chemical Warfare Service USA, No. M33A1."The most concerning discovery was an unlabelled 55-gallon drum, found turned on its side and approximately half-full of an unknown liquid. While the drum's contents were eventually handled, the chemical signatures in the surrounding environment were more persistent.The 2004 report confirmed that metals remain a primary concern in the soil, while the groundwater is contaminated with both metals and five distinct chlorinated volatile organic compounds (VOCs) at levels exceeding health screening values. The "hidden map" of Pelham Range is no longer just a training tool; it is a technical blueprint for a multi-generational cleanup effort.
Conclusion: A Lingering Legacy
Pelham Range stands as a monument to a time when national security outweighed environmental caution. The radioactive craters and mustard-slicked tanks were once the "gold standard" for ensuring American soldiers could survive the unthinkable.But as the forest grows over the old obstacle course, the "Ghost of Training Past" remains. We are now left with a difficult reckoning: How do we reconcile the vital training needs of the Cold War with our modern responsibility to the Alabama soil? The transition of the Toxic Gas Area proves that while the soldiers have moved on, the chemistry of the past is far harder to discharge.
