| 1 (41) | US Environmental Protection Agency | USA |  |
| 2 (45) | National Aeronautics and Space Administration * | USA | |
| 3 (64) | Lawrence Berkeley National Laboratory * | USA | |
| 4 (116) | Lawrence Livermore National Laboratory * | USA | |
| 5 (249) | Los Alamos National Laboratory * | USA | |
| 6 (300) | United States Department of Agriculture | USA | |
| 7 (343) | National Renewable Energy Laboratory | USA | |
| 8 (392) | National Institute of Standards and Technology * | USA | |
| 9 (401) | National Oceanic and Atmospheric Administration | USA | |
| 10 (409) | Argonne National Laboratory | USA | |
| 11 (444) | U.S. Army * | USA | |
| 12 (451) | United States Geological Survey | USA | |
| 13 (491) | Oak Ridge National Laboratory | USA | |
| 14 (621) | Sandia National Laboratories, New Mexico | USA | |
| 15 (905) | Pacific Northwest National Laboratory | USA | |
| 16 (1092) | U.S. Air Force | USA | |
| 17 (1111) | Idaho National Laboratory | USA | |
| 18 (1423) | Princeton Plasma Physics Laboratory | USA | |
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