| Total requests for Apr 2011: 317 |
| Unique requests | Total requests | Query | Documents returned |
| 3 | 5 | nuclear waste | 7 |
| 3 | 4 | nuclear | 26,756 |
| 3 | 4 | nuclear power | 4 |
| 3 | 4 | calculate your dose | 2 |
| 3 | 3 | radioactive waste | 8 |
| 3 | 3 | microwave | 6 |
| 2 | 8 | games | 43,630 |
| 2 | 6 | power lines | 5 |
| 2 | 4 | EMF | 3 |
| 2 | 3 | acid rain | 0 |
| 2 | 3 | Illinois | 121,002 |
| 2 | 2 | nuclear power plant | 6 |
| 2 | 2 | nuclear energy | 5 |
| 2 | 2 | microwave radiation | 6 |
| 2 | 2 | japan | 0 |
| 1 | 8 | sort Mana | 175,937 |
| 1 | 8 | chinese | 14,374 |
| 1 | 6 | radiation safety manual | 130,318 |
| 1 | 5 | mrem vs. mSv | 73,199 |
| 1 | 3 | wet scrubbers | 116,666 |
| 1 | 3 | fikishima | 107,999 |
| 1 | 3 | chernobyl | 108,002 |
| 1 | 3 | Rem | 184 |
| 1 | 3 | Maximum Contaminant Level | 231,999 |
| 1 | 3 | 34.7 µR. | 0 |
| 1 | 2 | transitional beaches | 174,499 |
| 1 | 2 | three mile island | 162,001 |
| 1 | 2 | thomas edison | 0 |
| 1 | 2 | teflon pans | 0 |
| 1 | 2 | sort mania | 174,499 |
| 1 | 2 | recicle games | 174,500 |
| 1 | 2 | nuclear environmental effects | 4 |
| 1 | 2 | nuclear environmental efects | 5 |
| 1 | 2 | hazardous waste | 7 |
| 1 | 2 | game fish | 174,500 |
| 1 | 2 | electromagnetic radiation | 6 |
| 1 | 2 | disintegration for an unstable nucleus | 54,500 |
| 1 | 2 | dental diagnostic x-ray unit | 173,500 |
| 1 | 2 | coal sulfur | 185,665 |
| 1 | 2 | coal plants | 191,502 |
| 1 | 2 | coal plant statistics | 1 |
| 1 | 2 | coal emissions | 185,499 |
| 1 | 2 | coal ash radiation | 1 |
| 1 | 2 | beach kids | 0 |
| 1 | 2 | accident nuclear weapon | 165,542 |
| 1 | 2 | The waste from nuclear energy is extremely dangerous it has to be carefully looked after for several thousand years | 167,999 |
| 1 | 2 | Libertyville il | 0 |
| 1 | 2 | Illinois State implementation plan approval | 181,499 |
| 1 | 1 | yearly dose | 0 |
| 1 | 1 | year dose | 6 |
| 1 | 1 | worker health safety | 4 |
| 1 | 1 | what is the material used for shield | 4 |
| 1 | 1 | what food is irradiated | 4 |
| 1 | 1 | waste water | 7 |
| 1 | 1 | visible ligh | 3 |
| 1 | 1 | uv light | 5 |
| 1 | 1 | uv light air conditioner | 0 |
| 1 | 1 | used fuel assemblies | 0 |
| 1 | 1 | us power plants | 6 |
| 1 | 1 | uranium mines | 6 |
| 1 | 1 | uranium disposal | 7 |
| 1 | 1 | ultraviolet | 5 |
| 1 | 1 | ukrane accident | 1 |
| 1 | 1 | tv pollute water | 1 |
| 1 | 1 | tv pollutants in water | 1 |
| 1 | 1 | transportation | 8 |
| 1 | 1 | transportation of radioactive waste | 8 |
| 1 | 1 | toxicity of radioisotopes | 0 |
| 1 | 1 | total dose per person | 0 |
| 1 | 1 | the use of x-ray in CT scan+pdf | 3 |
| 1 | 1 | test method for radioactive elements | 3 |
| 1 | 1 | television | 4 |
| 1 | 1 | surface radiation contamination | 6 |
| 1 | 1 | storage of a nuclear gauge | 4 |
| 1 | 1 | soil drilling | 4 |
| 1 | 1 | soart maniea | 0 |
| 1 | 1 | soart mania | 0 |
| 1 | 1 | smoke | 6 |
| 1 | 1 | smoke detector | 5 |
| 1 | 1 | smoke alarms | 5 |
| 1 | 1 | shop | 4 |
| 1 | 1 | santa fe nm | 0 |
| 1 | 1 | safety | 4 |
| 1 | 1 | safe exposure levels | 5 |
| 1 | 1 | rutherford | 0 |
| 1 | 1 | reassessment of radium thorium | 0 |
| 1 | 1 | radtown | 4 |
| 1 | 1 | radmap | 3 |
| 1 | 1 | radiotherapy | 4 |
| 1 | 1 | radionuclides | 7 |
| 1 | 1 | radioactivity | 8 |
| 1 | 1 | radiation | 8 |
| 1 | 1 | radiation pregnancy | 4 |
| 1 | 1 | radiation exposure | 8 |
| 1 | 1 | radiation exposure levels for people | 7 |
| 1 | 1 | radiation exposure in cross-atlantic flights | 0 |
| 1 | 1 | radiation calculation | 0 |
| 1 | 1 | radiation banana | 0 |
| 1 | 1 | radiación | 0 |
| 1 | 1 | radiacion | 0 |
| 1 | 1 | radation from japan | 0 |
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