Several animal species are able to hear frequencies well beyond the human hearing range. Some dolphins and bats, for example, can hear frequencies up to 100 kHz. Elephants can hear sounds at 14â16 Hz, while some whales can hear infrasonic sounds as low as 7 Hz (in water).
Several federal agencies were established during the Nixon Administration. These include: 1  OSHA (Occupational Safety and Health Administration) 2  MSHA (Mine Safety and Health Administration)  NIOSH (National Institute for Occupational Safety and Health)
The Defense Commissary Agency (DeCA) was established May 15, 1990, by a memorandum from the deputy secretary of defense; this was the first DoD functional agency consolidation during the post-Cold War cutbacks and downsizing. DoD appointed Army Maj. Gen. John P. Dreska as the agency's first director in June 1990.