It also said record searches showed at least 3,004 rounds of chemical weapons had been fired into some of the Cannon mines, and it listed the other weapon types tested on the property. It found chemical munitions residue and chemical agent contamination throughout the area and said it was likely the entire 1,425 acres of Cannon property was contaminated.

It recommended buying the land, fencing it, posting warning signs, doing some limited munitions removal and sealing the mines.

Douglas Cannon says a gold company that had a lease on the Cannon mines abandoned it for fear of the contamination. He said other companies that had shown interest in leasing it also backed away quickly once they learned about the Army's testing and contamination.

Louise says she had been anxiously awaiting the study that confirmed the contamination, and often called the Army Corps of Engineers seeking it. "They kept saying it would come in 30 days. Then in another 30 days," she said.

She says one employee there finally warned her that she only had two years from the time she learned of potential contamination to file a suit. She called an attorney, who confirmed that.

After the Cannons saw the draft study confirming contamination, they filed a claim with the Army, and then a lawsuit in federal court, seeking $8.8 million in damages, the value they put on the land.

Family secrets

As the lawsuit advanced, the Army said it found an old contract it had signed with the siblings' grandfather, Jesse Cannon, that had allowed the military to use the Yellow Jacket area for testing for six months. "We had never known about it," Louise says.

That contract, which gave Jesse just $1, allowed the Army to use a portion of his property in exchange for the Army's promise to "leave the property of the owner in as good condition as it was on the date of the government's entry."

Louise says, "The Justice Department says he did that because he was patriotic" and wanted to help the war effort against the Japanese. "We'll never know," she says. "It (the contract) never mentions any military maneuvers or testing. He wasn't allowed on the property for the six months it was used. I don't think he knew what they planned."

After the Army's "Project Sphinx" testing ended on that land, documents that emerged during court proceedings show that Jesse Cannon was not happy with what he found.

He walked the area with an Army claims officer who found the "entire area is liberally covered with shell, rocket and bomb fragments," and that "just outside a cabin are 10 butane-filled dud bombs."