Ex-EPA chief Christie Whitman was bombarded by boos and a host of accusations Monday at a hearing into her assurances that it had been safe to breathe the air around the fallen World Trade Center.

The confrontation between the former head of the Environmental Protection Agency and her critics grew heated at times. Some members of the audience shouted in anger, only to be gaveled down by Rep. Jerrold Nadler, D-N.Y., who chaired the hearing.

For three hours Whitman faced charges from Nadler and others that the Environmental Protection Agency’s public statements after the Sept. 11, 2001, attacks gave people a false sense of safety.

“The report, prepared by the CIA’s inspector general, is the only major 9/11 government review that has still not been made publicly available,” Michael Isikoff reported in January. “When it was completed in August 2005, Newsweek and other publications reported that it contained sharp criticisms of former CIA director George Tenet and other top agency officials for failing to address the threat posed by Al Qaeda, as well as other mistakes that might have prevented the attacks.”

The controversial siting of Giuliani’s emergency management center at World Trade Center Building 7 and “the issue of the radios between the police and fire department,” which was a factor leading to the deaths of 342 firefighters when the towers collapsed. The country’s largest firefighter union is now leading an anti-Giuliani campaign.

Giuliani has also recently come under heated criticism for ignoring toxic air pollutants in pressing for a rapid cleanup of the World Trade Center site after 9/11,

“Who really benefited from what happened that day?” he asked rhetorically. Not “Arabs,” but “the Military Industrial Complex,” Buswell concluded. “We must demand a new, independent investigation.”

For voicing those opinions in an e-mail to 38 people on the San Antonio Army base, Buswell was stripped of his security clearance, fired from his job, demoted, and ordered to undergo a mental health exam.

On Tuesday, members of a 911 truth activist group confronted former Mayor Rudy Giuliani at a New York fundraiser about the fall of the World Trade Center.

“How come people in the buildings weren’t notified?” asked one member of the group. “And how can you sleep at night?”

Giuliani’s politely-phrased response, caught by WNBC newscameras filming the event, was “I didn’t know that the towers were going to collapse.”