第104屆美國國會提出四項法案,旨在將美國聯邦氦氣生產和精煉工作私有化。1996年10月9日,柯林頓政府(英语:Presidency of Bill Clinton)正式通過《1996年氦氣私有化法案(英语:Helium Privatization Act of 1996)》,廢除美國聯邦氦氣提煉計劃。 飞艇
the United States Constitution|Constitution came into force. President Clinton Raises FEMA Director to Cabinet Status (新闻稿). Feberal Emergency Management
American Terrorist: Timothy McVeigh and the Oklahoma City Bombing (2001) New York Times. Timothy McVeigh Bombs Oklahoma City Building. nytimes.com. 2012-04-19