| Acronym | Meaning |
 | PUMS | Public Use Microdata Samples |
| OSHRC | Occupational Safety And Health Review Commission |
| OPA | Office Of Population Affairs |
| SSA | Social Security Administration |
| OSM | Office Of Surface Mining; Office Of Spectrum Management |
| ORMH | Office Of Research On Minority Health |
| USDA | United States Department Of Agriculture |
| NIAAA | National Institute On Alcohol Abuse And Alcoholism |
| PAM | Office Of Acquisition And Property Management |
| STB | Surface Transportation Board |
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