|Roller Coasters Built||30|
|Roller Coaster Locations||38|
|Extant Roller Coasters||10|
Owned by Carl Miler who died in 2001 and was the father of Fred Miler who operates E&F Miler Industries with his son.
Carl Miler is believed to have constructed and operated roller coasters before offering them for sale. One of his first advertisements is the April 21st 1953 issue of Billboard offered a "Rollo Coaster" for $6,750.09 USD.