Bonobos were separated from the common chimpanzee's dwellings.
Harry Guy Traver -LRB- November 25 , 1877 -- September 27 , 1961 -RRB- was an American engineer and early roller coaster designer .. American. United States. engineer. engineer. roller coaster. roller coaster. As the founder of the Traver Engineering Company , Traver was responsible for the production of gentle amusement rides like the Tumble Bug and Auto Ride .. Tumble Bug. Tumble Bug. However , Traver 's coasters became legendary for their unique twisted layouts and thrilling , swooped turns .. At a time when most coasters were built from wood , Traver was the first coaster builder to utilize steel for the primary structural material .