Lewis Cass Karrick (1890–1962) was an American petroleum refinery engineer, oil shale and coal technologist, and inventor.
[1][2] Lewis Carrick worked as a consulting engineer for the United States synthetic fuels studies in Utah and Ohio.
He was also actively involved in the early development of the NTU oil shale retort.
[2] In 1930–1938, he worked as a supervisor of the coal products research at the University of Utah.
[1] In 1950, he was transferred to the United States Bureau of Mines's Pittsburgh station.