Liquefied Petroleum Gas (LPG), also known as propane, is a nonrenewable
gaseous fossil fuel, which turns to liquid under moderate pressure. LPG,
a by-product of natural gas processing and oil refining, includes
various mixtures of hydrocarbons. The type of LPG used as a motor
vehicle fuel is a liquid mixture containing at least 90 percent propane,
2.5 percent butane and higher hydrocarbons, and the balance is ethane
and propylene. The mixture is commonly called "propane" among general
consumers, but motor vehicle operators using the fuel refer to it as
LPG. In 1910, under the direction of Dr. Walter Snelling, the U.S.
Bureau of Mines investigated gasoline to see why it evaporated so fast
and discovered that the evaporating gases were propane, butane, and
other light hydrocarbons. Dr. Snelling built a still that could separate
the gasoline into its liquid and gaseous components and sold his
propane patent to Frank Phillips, the founder of Phillips Petroleum
Company. By 1912, propane gas was cooking food in the home. The first
car powered by propane ran in 1913. By 1915 people were using propane in
torches to cut through metal. LPG has been used as a transportation
fuel, mainly in heavy trucks and forklift vehicles, around the world for
more than 60 years. On December 28th , 1984, a preventable tragedy in
the giant gas-works on the outskirts of Mexico City left 500 dead and
public facilities crammed with injured people. The LPG (liquefied
petroleum gas) was stored in massive million-gallon containers which was
a disastrous mistake. The gas should have been stored in smaller
receptacles in various locations to prevent a calamity like this
occurring. On January 30, 2007, four people were killed and five others
were seriously injured when propane vapors from a storage tank ignited
and exploded at the Little General convenience store and gas station in
Ghent, West Virginia. Propane was used as fuel inside the building,
which was completely destroyed. The US Chemical Safety Board has
produced an excellent DVD on this tragic incident, Half An Hour to
Tragedy which is available for viewing and free downloading at
http://www.csb.gov/videoroom/detail.a...
. This clip is from the 1950s film, Progress Parade, made by the
American Petroleum Industry (API). The entire film is available on the
Internet Archive.