Former Manufactured Gas Plant (FMGP)/Coal Tar Site GIS Project
(person for size). These large, gas-filled, reservoirs or "gas holders" were collapsible like
an accordian on railings and could extend into the subsurface as much as 80 feet. They
were located in the vicinity of coal-gas works as well as elements of the gas distribution
network to provide storage for continuous gas production and peak demand. Ater the
invention and proliferation of the airplane, directions for pilots to local airports were often
painted on their tops as a public service. (See one on a 1939 Aerial Photograph)
(Photograph DN-0000002 (1902), Chicago Daily News negatives collection, Chicago Historical Society)
Updated 04/20/2010 SLD