| MSHA | mannose-sensitive hemagglutination; Mine Safety and Health Administration |
|---|---|
| NETS | Network for Employers for Traffic Safety |
| NHTSA | National Highway Traffic Safety Administration |
| NIOSH | National Institute for Occupational Safety and Health |
| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome... |