Boeing engine started in 1943 and Boeing's gas turbines were designated models 502 (T50), 520 (T60), 540, 551 and 553. Boeing built 2,461 engines before production ceased in April 1968. Many applications of the Boeing gas turbine engines were considered to be firsts, including the first turbine-powered helicopter and boat. Vertol Aircraft Corporation was acquired by Boeing in 1960, and was reorganized as Boeing's Vertol division. The twin-rotor CH-47 Chinook, produced by Vertol, took its first flight in 1961. This heavy-lift helicopter remains a work-horse vehicle to the present day. In 1964, Vertol also began production of the CH-46 Sea Knight.
Chinook Jargon in British Columbia by gold prospectors and Royal Engineers. As industry developed, Chinook Jargon was often used by cannery workers and hop pickers of diverse ethnic background. Loggers, fishermen and ranchers incorporated it in their jargon. A heavily creolized form of Chinook Jargon (Chinuk Wawa) is still spoken as a first language by some residents of Oregon, much as the Métis language Michif is spoken in Canada. Hence, Chinuk Wawa as it is known in Oregon is now a creole language, distinct from the widespread and widely varied pronunciation of the Chinook Jargon as it spread beyond the Chinookan homeland.