"They are another dot," Sen. Bob Graham (D-Fla.) said after the congressional intelligence panel finished its second day of closed-door hearings.

Graham said information uncovered by his investigators "appears to be relevant to the question, what did we know before Sept. 11?"

Graham added, "Had someone sat down with all the information and said, ‘Is there a pattern here?' it's possible that through that process we could have gotten to those hijackers before they flew those four airplanes."

Graham wouldn't offer details on the new evidence, but said his findings weren't as significant as the FBI's ignored "Phoenix memo" or the Zacharias Moussaoui case.

The Phoenix memo was a warning by Arizona FBI agent Ken Williams, who wanted to probe Middle Eastern men in flight schools last summer.

The Moussaoui letter was written by Minnesota agent Coleen Rowley, and detailed how FBI big shots at headquarters thwarted the field agents' investigation into suspected 20th hijacker Zacarias Moussaoui.

Today, Rowley testifies before the Senate Judiciary Committee, along with FBI Director Robert Mueller and Justice Department Inspector General Glenn Fine.

Yesterday, Rowley was questioned by intelligence committee staffers met with Sen. Charles Grassley (R-Iowa) - the FBI's No. 1 critic.

In an interview with The Post yesterday, Grassley cast doubt on the claim by David Frasca - head of the FBI's radical fundamentalist unit - that he did not see Rowley's terror warning until October.

"It sounds to me like traditional FBI buck-passing," said Grassley.