JIM WEST / SCIENCE PHOTO LIBRARY JIM WEST / SCIENCE PHOTO LIBRARY
Rail cars being loaded with liquefied petroleum gas (LPG). Liquefied petroleum gas is one of the products from the refining of crude oil. Petroleum gases (propane and butane) are used as a fuel in a similar way to natural gas, which is mostly methane. Photographed at McPherson, Kansas, USA.
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