Amarillo; Texas; A sign warns against trespassing at the historic helium plant; source of nearly all the worlds helium until World War II. The plant operated until the 1990s when the government decided to privatize the U.S. helium industry.
Amarillo; Texas; A sign warns against trespassing at the historic helium plant; source of nearly all the worlds helium until World War II. The plant operated until the 1990s when the government decided to privatize the U.S. helium industry