OKLAHOMA CITY, April 23, 1995 (UPI) -- Rescue workers, imperiled by a slab of dangling concrete, slowed their search through the rubble of the Oklahoma City federal building Sunday, a few miles from where President Clinton pledged to grieving families, ''We stand with you.''
The toll of confirmed bomb fatalities climbed to 74 with the death Sunday of a nurse, injured while running into the nine-story Alfred P. Murrah Federal Building minutes after Wednesday morning's truck-bomb explosion.
Officials told the president that recovery crews since the blast have moved 100 tons of debris with their hands, their hopes fading of finding beneath it anyone still miraculously alive.
Meanwhile, the FBI confirmed a man arrested Sunday in San Bernardino, Calif., had not been identified as the ''John Doe No. 2'' prime suspect being sought nationwide.
Promising justice in Biblical terms, Clinton told an amphitheater packed with grieving families, their neighbors and thousands of sympathetic Oklahomans, ''Those who trouble their own house inherit the wind. Justice will prevail.''
Clinton was given a prolonged standing ovation upon his entrance. ''We mourn with you,'' he said. America will ''stand with you for as many tomorrows as it takes.''
Clinton designated Sunday a National Day of Mourning, prompting condolences and often anguished sermons from pulpits across the country. He also told the assembly of the white flowering dogwood tree he and the first lady planted earlier in the day on a knoll outside the White House, as a remembrance of lives lost.
''A tree takes a long time to grow and wounds take a long time to heal but we must begin,'' Clinton told the crowd.
The latest bomb-related death was that of a nurse apparently injured on her way into the building only moments after the explosion Wednesday, who struck her head in a fall and succumbed Sunday, officials said.
Sunday evening Clinton defended the April 19, 1993, federal raid that occurred on the 51st day of a standoff at a Branch Davidian compound outside Waco, Texas, an incident increasingly linked to the timing of the Oklahoma City bombing.
''I cannot believe that any serious patriotic American believes that the conduct of those people at Waco justifies the kind of outrageous behavior we've seen here in Oklahoma City or the kind of inflammatory rhetoric we've hearing all across this country today. It's wrong,'' Clinton said in an interview broadcast live within the CBS ''60 Minutes'' program.
So-called ''militia groups'' should remember, he added, ''This is a freedom loving democracy because the rule of law has reigned for over 200 years now, not because vigilantes took the law into their own hands. ''
Assistant Oklahoma City Fire Chief Jon Hansen said Sunday that recovery workers are imperiled by a huge concrete slab dangling from the seventh floor over the pit left by the blast, pieces of which are continually dropping. The weakened building structure has sagged 20 inches toward the blast site, officials said. Once the hanging concrete slab can be secured to the remaining structure, it will be up to eight hours later that the recovery crews can reach the area where they fear are many more bodies.
Clinton Sunday also announced a set of actions and proposals to increase federal anti-terrorism resources and reinforce safety measures at facilities across the country. He urged Congress to immediately pass the proposed Omnibus Anti- Terrorism Act of 1995 and provide full funding for methods to increase surveillance of suspicious groups, through electronic means and by monitoring hotel and transportation records.
All Cabinet members, six of whom accompanied the president to the prayer memorial at the Oklahoma State fairgrounds, were ordered to review the vulnerability of all civilian federal installations and aides were told to prepare more recommendations.
The FBI issued a one-line statement Sunday that said only, ''David Iniguez was arrested today on unrelated charges and our efforts continue to identify John Doe No. 2,'' referring to a man detained in San Bernardino, Calif., and reportedly charged with being AWOL from an Army base in Kansas.
The other major suspect in the case, 27-year-old Army veteran Timothy McVeigh, was being held under heavy security at Tinker Air Force Base, near Oklahoma City, on preliminary federal charges of destroying federal property ''by means of fire or an explosive.'' He appeared before a federal magistrate late Friday night, officials said.
Authorities still believe 150 people -- more than a dozen of them children -- remain entombed in the rubble of last week's truck bomb attack. The number of bodies found in the building and in the remnants of a building that collapsed across the street, and not including the nurse victim, rose to 73, 60 of which were identified. Ten of the 13 bodies of children were identified only by means of fingerprints gathered at their homes, officials said.
''I don't think we're going to remove all those bodies for another couple of weeks,'' Ray Blakeney, director of operations for the Oklahoma state medical examiner's office, said.
Rescue workers, who limited their efforts to the removal of debris from the top floors and to working on the concrete slab hanging over the lower floors, expect to find many more bodies when they reach what they call ''the pit,'' which includes the day-care center, credit union and Social Security office.
Rescue efforts have also been slowed to ensure the integrity of the crime scene and to assist the FBI investigation. The medical examiner's office has X-rayed all bodies removed, and has collected shrapnel and other evidence to aid the FBI, Blakeney said.
McVeigh was one of two men sought by the FBI since Thursday, when agents issued composite sketches and an all-points bulletin. A man identified as a ''material witness,'' who had served in the army with McVeigh, Terry Lynn Nichols, presented himself to authorities Friday at Herington, Kan., about 30 miles from where the FBI said the Ryder rental truck, used in the bombing, was rented at Junction City. His brother James also was being questioned, officials said, but neither of the Nichols brothers is the second prime suspect, they added.
McVeigh gave as his address the working farm in Decker, Mich., that is also the home of the Nichols brothers, the affidavit said.