He left direct employment with the USGS in 1903 to teach at the University of Wyoming at Laramie, where he taught until 1907 when he took the Chair of economic geology at the Sheffield Scientific School at Yale University.
He left direct employment with the USGS in 1903. This was to teach at the University of Wyoming at Laramie. When he took the Chair of economic geology at the Sheffield Scientific School at Yale University. This was what he taught until 1907.