| 1 (128) | National Aeronautics and Space Administration * | USA |  |
| 2 (164) | Lawrence Berkeley National Laboratory * | USA | |
| 3 (255) | Oak Ridge National Laboratory | USA | |
| 4 (332) | Argonne National Laboratory | USA | |
| 5 (333) | SLAC National Accelerator Laboratory | USA | |
| 6 (378) | NASA Ames Research Center | USA | |
| 7 (385) | National Renewable Energy Laboratory | USA | |
| 8 (420) | Sandia National Laboratories, New Mexico | USA | |
| 9 (454) | National Institute of Standards and Technology * | USA | |
| 10 (495) | NASA Langley Research Center | USA | |
| 11 (519) | Brookhaven National Laboratory * | USA | |
| 12 (524) | Lawrence Livermore National Laboratory * | USA | |
| 13 (528) | Pacific Northwest National Laboratory | USA | |
| 14 (556) | Glenn Research Center | USA | |
| 15 (593) | Sandia National Laboratories, California | USA | |
| 16 (645) | NASA Johnson Space Center | USA | |
| 17 (680) | Jet Propulsion Laboratory | USA | |
| 18 (738) | US Environmental Protection Agency | USA | |
| 19 (755) | U.S. Air Force | USA | |
| 20 (757) | Los Alamos National Laboratory * | USA | |
| 21 (784) | U.S. Army * | USA | |
| 22 (923) | NASA Goddard Space Flight Center | USA | |
| 23 (942) | National Oceanic and Atmospheric Administration | USA | |
| 24 (993) | United States Department of Agriculture | USA | |
| 25 (1083) | Ames Laboratory | USA | |
| 26 (1113) | National High Magnetic Field Laboratory | USA | |
| 27 (1144) | US Naval Research Laboratory | USA | |
| 27 (1144) | NASA Marshall Space Flight Center | USA | |
| 29 (1262) | United States Geological Survey | USA | |
| 30 (1263) | US Food and Drug Administration | USA | |
| 31 (1390) | National Center for Atmospheric Research | USA | |
| 32 (1448) | Center for Devices and Radiological Health | USA | |
| 33 (1539) | National Energy Technology Laboratory | USA | |
| 34 (1565) | Smithsonian Institution * | USA | |
| 35 (1584) | U.S. Department of Energy * | USA | |
| 36 (1927) | Fermi National Accelerator Laboratory | USA | |
| 37 (1941) | National Research Council Canada * | CAN | |
| 38 (2313) | Idaho National Laboratory | USA | |
| 39 (2561) | Natural Resources Canada | CAN | |
| 40 (3604) | Defence Research and Development Canada | CAN | |
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