A 1970 report by researchers at the Army's Edgewood Arsenal in Maryland said there was "incontrovertible" evidence that a nerve gas killed the sheep, but the Army never has acknowledged that it, or the Dugway testing, was responsible.
For a time, it was suspected that the anthrax in the 2001 attacks — which killed five people when letters containing the germs were sent to lawmakers and news organizations — originated at Dugway. The FBI and scientists later determined it did not.
• Dugway tests more than biological and chemical weapons
In recent years, one of the largest Dugway programs has been testing unmanned aerial vehicles — the military's preferred name for drones — for the U.S. Army. The vast expanses of Dugway sit adjacent to the even larger Utah Test and Training Range, operated by the U.S. Air Force, allowing for all kinds of tests involving the drones, their components and missions in tandem with manned vehicles, especially helicopters.
Dugway also tries to find better ways to detect a biological or chemical weapons attack and tests and trains personnel in methods for cleaning contaminated sites. It also tests how military equipment, from fatigues to M-16s to tanks, react when contaminated. There's also testing on meteorology and conventional explosives.
And don't confuse Dugway with the former Deseret Chemical Depot, now called Tooele Army Depot South Area, where the Army destroyed chemical weapons to comply with treaties. That's a different installation closer to Tooele. Speaking of which ...
• It's out there
Saying Dugway sits 85 miles southwest of Salt Lake City doesn't really do justice to Dugway's location. The last 36 miles of the drive is on a two-lane highway through the sparsely-populated desert.
Even that only gets you to Dugway's main gate. To reach the biological testing facility at Dugway, you need to drive about 20 minutes into the installation's interior — not that the public is allowed to do so. Crossing Dugway would take a couple of hours.
A lot of people associate Dugway with the town of Tooele, but even reaching Tooele from Dugway's main gate requires a 45-minute drive over a mountain range.