| Acronym | Meaning |
 | NTGS | Air/Superfund National Technical Guidance Study |
| NARS | National Asbestos Registry System |
| EAR | European Asthenospheric Reservoir (mantle Source For Tertiary-Quaternary Volcanism) |
| NAMT | National Advanced Manufacturing Testbed |
| EHCO | Extended Hueckel Crystal Orbital |
| IIRS | Ion Impact Radiation Spectroscopy |
| CLIC | Compact LInear Collider |
| ETEX | European Tracer Experiment |
| EDRS | Enforcement Document Retrieval System |
| TO | Toxic Organic |
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