One moment of carelessness with anhydrous ammonia (NH3) can forever alter lives—a stark reality that farmers must confront this season. But here's where it gets controversial: while NH3 remains a cost-effective nitrogen source, its handling demands a level of caution that many might underestimate. Chase Dewitz’s recent farm incident serves as a chilling reminder of what’s at stake when safety takes a backseat. And this is the part most people miss: even seemingly minor equipment issues, like a faulty O-ring, can trigger catastrophic outcomes.
Updated November 05, 2025, 06:31 AM
Safety protocols around NH3 aren’t mere bureaucratic hurdles—they’re lifelines. Dewitz’s story begins with routine maintenance in late October, which spiraled into a harrowing accident. At a fill site near Steele, N.D., a compromised O-ring in the metering system allowed NH3 to leak. Despite discussions to replace it, other tasks took priority. On the day of the accident, the O-ring appeared functional, lulling everyone into a false sense of security.
“The O-ring likely absorbed moisture, swelled temporarily, and masked the issue,” Dewitz explains. “When my employee disassembled the chamber, the O-ring failed, releasing a dangerous amount of anhydrous ammonia directly onto him.” In a panic, the employee bypassed the nearby emergency water soak tank, rushing instead to the distant farm shop. Fortunately, a trained coworker intervened, removing contaminated clothing and irrigating the burns—though the damage was already severe.
Weeks later, the employee remains in a Minneapolis burn center, recovering from skin graft surgery. This incident underscores how split-second decisions can lead to lifelong repercussions. Here’s the bold truth: NH3’s forgiving appearance belies its potential for devastation, especially when paired with outdated equipment or complacency.
A Cautionary Tale for the Season Ahead
As fall NH3 applications surge, Dewitz urges farmers to prioritize safety. “Many may be revisiting NH3 after years, forgetting its hazards,” he warns. “And older, neglected equipment can be a ticking time bomb.” Fred Whitford, director of Purdue Pesticide Programs, emphasizes the need for comprehensive training—regardless of experience level. “Safety isn’t optional; it’s a collective responsibility,” he asserts. But here’s the counterpoint: With rising NH3 usage, are farms truly prepared to bridge the knowledge gap for seasonal or inexperienced workers?
Key Takeaways for 2026 Crop Users:
1. Equipment Prep is Non-Negotiable: A minor O-ring failure can escalate into disaster. Regular inspections are critical.
2. Protective Gear Isn’t Optional: Masks, gloves, and specialized clothing are essential, yet often overlooked. As Dewitz notes, “The tools exist—using them is the challenge.”
3. Stay Calm in Emergencies: Panic worsens outcomes. Know emergency protocols, like immediate water immersion.
4. Transport NH3 Safely: Adhere to guidelines: drive under 30 mph, display slow-moving vehicle emblems, and secure tanks with dual chains.
Thought-Provoking Question: As NH3 usage climbs, are farms investing enough in training and equipment upgrades, or are they gambling with worker safety? Share your perspective in the comments—this conversation could save lives.
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