Quick Info
On June 21, 1947, out in Puget Sound near Maury Island, Washington, a guy named Harold Dahl said he watched six huge doughnut-shaped objects flying overhead while he was out on his boat salvaging logs. One of them started acting strange, wobbling and dropping low, then dumped a bunch of hot, molten slag that rained down on his boat. His 15-year-old son Charles got burned on the arm, their dog Sparky died from the burns, and the boat itself took some damage.
The next day his business partner Fred Crisman came out with him, and they collected samples of the weird slag. Dahl later said a man in a black suit showed up, knew things he shouldn’t have, and basically told him to keep quiet or else. This is the same summer Kenneth Arnold saw his famous “flying saucers,” and he ended up looking into the Maury Island story for Ray Palmer. Two Army Air Force officers collected the slag, flew back in a B-25, and the plane crashed, killing both of them.
The FBI investigated and decided it was a hoax. Dahl and Crisman eventually said they made it up, and the slag turned out to be ordinary industrial junk. Even so, this case is where the whole “Men in Black” idea first popped up in UFO lore, and people still argue about whether there’s more to it than just a tall tale.
Timeline of Events – June and July 1947
Here’s how the story unfolded, pieced together from what Dahl and Crisman originally told people, Kenneth Arnold’s notes, Ray Palmer’s magazine work, and the FBI files that eventually came out.
- June 21, 1947, around 2:00 p.m. Harold Dahl is out on his boat North Queen with his son Charles, two crewmen, and the family dog Sparky. They’re salvaging logs in the east bay of Maury Island. Suddenly six enormous doughnut-shaped things appear in the sky, metallic, with portholes maybe, about 100 feet across. One of them starts to wobble, drops down low over the boat, and begins spewing hot slag and molten metal. The stuff rains down, burns Charles’s arm badly enough that he needs a hospital later, kills the dog Sparky in a pretty awful way, and damages the boat. Dahl beaches it and they all hide under some cliffs until the objects finally speed off.
- June 22 Dahl calls Fred Crisman, his partner. They go back to the spot and pick up pieces of the slag. It’s lightweight, porous, and was still hot when it first hit. Dahl says later that day a man in a dark suit driving a black Buick showed up at his house, knew every detail of what happened even though Dahl hadn’t told anyone yet, and warned him never to talk about it or bad things would happen. First recorded “Man in Black” story in UFO history.
- June 24 Kenneth Arnold sees nine shiny objects zipping around near Mount Rainier and coins the term “flying saucer.” The whole country starts paying attention.
- Late June to early July Crisman and Dahl reach out to Ray Palmer, the editor of Amazing Stories, who’s excited about Arnold’s sighting. Palmer asks Arnold and another pilot, Capt. Emil J. Smith, to go check out the Maury Island claims. Arnold talks to Dahl, who seems nervous and reluctant. Crisman hands over a box of slag samples to the investigators.
- July 31–August 1 Two Army Air Force intelligence officers, Capt. William L. Davidson and Lt. Frank M. Brown, meet Dahl and Crisman in Tacoma at the Winthrop Hotel. They take the slag box and some other debris. They fly back east in a B-25 Mitchell bomber. The plane crashes near Kelso, Washington, due to an engine fire. Both officers are killed. The box and debris are lost in the wreck.
- August–September 1947 The FBI steps in to investigate the crash and the whole Maury Island story. Agent Jack Wilcox talks to Dahl, who says if anyone official asks again he’s going to call it a hoax because he doesn’t want more trouble. The FBI decides the slag is just ordinary igneous rock, pumice, or smelter waste from a beach or industrial site. Case closed as a hoax.
- 1952 Kenneth Arnold and Ray Palmer publish The Coming of the Saucers, which includes their version of the Maury Island events, the MIB encounter, and hints at a bigger conspiracy.
What Dahl and Crisman Said Happened
Dahl described the six objects as metallic, doughnut-shaped with open centers, maybe portholes. One malfunctioned, hovered right over the boat, and started dumping hot slag, molten metal that burned on contact. Charles ended up with serious arm burns, Sparky died in agony, and the boat’s deck and rigging got scorched. The next day Dahl and Crisman went back and gathered samples. The slag was strange: lightweight, porous, and looked like it had been superheated. Dahl said the “man in black” knew things he couldn’t possibly know unless he was there or had inside information, and the warning felt very real at the time.
"Six very large doughnut-shaped aircraft... one descended low, spewing molten metal and hot slag... it burned my son's arm, killed our dog."
– Harold Dahl (as told to Kenneth Arnold and Ray Palmer)
Shadows Over Puget Sound: The Maury Island UFO Mystery
Check out more videos on Maury Island
The Crash, the FBI, and the Hoax Label
After Arnold got involved, the Army Air Force sent two intelligence officers to Tacoma. They interviewed Dahl and Crisman, took the slag box, and flew it out in a B-25. The plane went down near Kelso, engine fire, both men killed. The FBI looked into it and decided the whole thing was made up. Dahl told the agent he’d call it a hoax if asked again because he didn’t want any more hassle.
"Dahl did not admit... it was a hoax, but stated if questioned by authorities he was going to say it was a hoax because he did not want any further trouble."
– FBI Agent Jack Wilcox, memo to J. Edgar Hoover (1947)
The slag samples were tested and came back as ordinary industrial waste or beach pumice. The FBI memo to J. Edgar Hoover basically says the story was fabricated. Project Blue Book’s Edward Ruppelt later called it “the dirtiest hoax in UFO history.”
What People Still Argue About
Most researchers today accept it as a hoax. Dahl and Crisman backed off, the slag was mundane, no physical evidence survived. But some things don’t quite line up neatly. Why did Dahl only partially recant under pressure? Why the dramatic B-25 crash right after the officers got the debris? Fred Crisman was later subpoenaed in the Jim Garrison JFK investigation in 1968, which adds a weird conspiracy layer for some.
"A man in black suit knew every detail... warned me never to speak or bad things would happen."
– Harold Dahl (describing the MIB visit)
The “Man in Black” story became a staple of UFO lore afterward. Was it all invented for attention? A distraction? Or did something real happen and get buried under the hoax label?
Legacy in 2026
Almost 80 years on, Maury Island is remembered as the first big modern UFO case after Kenneth Arnold’s sighting kicked everything off. It’s where the “Men in Black” idea was born, silent, suited figures showing up to shut people up. The 2017 Washington State Senate resolution recognized the 70th anniversary, and there’s a small but dedicated following that still digs into it. Books, documentaries (like the 2014 film), and FBI files keep the conversation alive.
In today’s UAP world, people look back and wonder if the hoax conclusion was too quick or if there was pressure to close it out. It’s a strange, messy starting point for the whole UFO phenomenon. Hoax or not, it shaped a lot of what came after.
