1.   A laboratory official said the mock fuel rods may have become contaminated through particles of radiation that had floated in the air.

2.   Brookhaven laboratory officials described the report as the first to explain the biochemical effects in the brain from cigarette smoke.

3.   Just days before, laboratory officials had fired the computer scientist for security violations, and investigators suspected he was a spy, but the search was yielding little.

4.   Laboratory officials deny any systematic discrimination.

5.   Laboratory officials informed the FBI, which had suspicions of Lee from Tiger Trap and opened an investigation.

6.   Laboratory officials had not even informed the FBI when Lee went to Taiwan for six weeks earlier that year to consult at a military institute.

7.   Laboratory officials said they were puzzled by those numbers.

8.   Laboratory officials would not identify the workers involved.

9.   Laboratory officials are trying to figure out how this might work in practice.

10.   Laboratory officials said they were stunned by the announcement.