Efforts to reach Jones prior to press time Thursday night were not successful. He later declined comment. Jones told the Deseret Morning News on Wednesday that his paper had gone through an unusual third round of peer review in what is now an apparently unsuccessful effort to quell concerns on campus.

"BYU remains concerned that Dr. Jones' work on this topic has not been published in appropriate scientific venues," the university statement said.

Jenkins said BYU's reputation was a consideration, too.

"It is a concern when faculty bring the university name into their own personal matters of concern," she said.

Jones, also known for his cold fusion research, provided academic clout to the 9/11 truth movement. C-SPAN repeatedly broadcast a conference that featured Jones this summer. Recent articles about Sept. 11 conspiracy theories that focused at least in part on Jones have appeared in the New York Times, the Washington Post, the Guardian in London and other publications.

Recent rebuttals to the demolition theory have been released by the State Department and the National Institute of Standards and Technology, which published a 10,000-page report on the towers' collapse.

A modified version of Jones' paper was scheduled to be published this week in the online Journal of 9/11 Studies. Jones is a co-editor of the journal.

BYU does not grant tenure, generally regarded as a permanent position, to professors. However, it does give continuing status to professors found worthy after six years on campus.

"Continuing status," Jenkins said, "grants the expectation that faculty members will have continuing employment at the university, although it is not a guarantee. They still need to meet satisfactory performance levels for scholarship, citizenship and teaching."

The review will be conducted at three levels by the administration, the College of Physical and Mathematical Sciences and the Physics Department.

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E-mail: twalch@desnews.com