Reidblog [The Reid Report blog]

WASHINGTON, June 22 — The United States government abandoned the search for unconventional weapons in Iraq long ago. But Dave Gaubatz has never given up.

Mr. Gaubatz, an earnest, Arabic-speaking investigator who spent the first months of the war as an Air Force civilian in southern Iraq, has said he has identified four sites where residents said chemical weapons were buried in concrete bunkers.

The sites were never searched, he said, and he is not going to let anyone forget it.

"I just don't want the weapons to fall into the wrong hands," Mr. Gaubatz, of Denton, Tex., said.

For the last year, he has given his account on talk radio programs, in Congressional offices and on his Web site, which he introduced last month with, "A lone American battles politicians to locate W.M.D."

Some politicians are outspoken allies in Mr. Gaubatz's cause. He is just one of a vocal and disparate collection of Americans, mostly on the political right, whose search for Saddam Hussein's unconventional weapons continues.

More than a year after the White House, at considerable political cost, accepted the intelligence agencies' verdict that Mr. Hussein destroyed his stockpiles in the 1990's, these Americans have an unshakable faith that the weapons continue to exist.

The proponents include some members of Congress. Two Republicans, Representative Peter Hoekstra of Michigan, chairman of the House Intelligence Committee, and Senator Rick Santorum of Pennsylvania held a news conference on Wednesday to announce that, as Mr. Santorum put it, "We have found weapons of mass destruction in Iraq."

American intelligence officials hastily scheduled a background briefing for the news media on Thursday to clarify that. Hoekstra and Mr. Santorum were referring to an Army report that described roughly 500 munitions containing "degraded" mustard or sarin gas, all manufactured before the 1991 gulf war and found scattered through Iraq since 2003.

Such shells had previously been reported and do not change the government conclusion, the officials said.

Such official statements are unlikely to settle the question for the believers, some of whom have impressive credentials. They include a retired Air Force lieutenant general, Thomas G. McInerney, a commentator on the Fox News Channel who has broadcast that weapons are in three places in Syria and one in Lebanon, moved there with Russian help on the eve of the war.

"I firmly believe that, and everything I learn makes my belief firmer," said Mr. McInerney, who retired in 1994. "I'm amazed that the mainstream media hasn't picked this up."

Also among the weapons hunters is Duane R. Clarridge, a long-retired officer of the Central Intelligence Agency who said he thought that the weapons had been moved to Sudan by ship.

"And we think we know which ship," Mr. Clarridge said in a recent interview.

The weapons hunters hold fast to the administration's original justification for the war, as expressed by the president three days before the bombing began in 2003. There was "no doubt," Mr. Bush said in an address to the nation, "that the Iraq regime continues to possess and conceal some of the most lethal weapons ever devised."

The weapons hunters were encouraged in February when tapes of Mr. Hussein's talking with top aides about his arsenal were released at the Intelligence Summit, a private gathering in northern Virginia of 600 former spies, former military officers and hobbyists.

"We reopened the W.M.D. question in a big way," said John Loftus, organizer of the conference.

In March, under Congressional pressure, National Intelligence Director John D. Negroponte began posting on the Web thousands of captured Iraqi documents. Some intelligence officials opposed the move, fearing a free-for-all of amateur speculation and intrigue.

But the weapons hunters were heartened and began combing the documents for clues.

Mr. Gaubatz, 47, now chief investigator for the Dallas County medical examiner, said he knew some people might call him a kook.

"I don't care about being embarrassed," he said, spreading snapshots, maps and notebooks documenting his findings across the dining room table in an interview at his house. "I only brought this up when the White House said the hunt for W.M.D. was over."