Menninga, Clarence (1928-) | Heritage Hall, Hekman Library
Clarence Menninga was born in rural Iowa in 1928, and grew up in a Christian family. He earned the B.A. (chemistry) at Calvin College in 1949, the M.A.T. (science and math) at Western Michigan University in 1959, and the Ph.D. at Purdue University (chemistry) in 1965. After a stint in industry as an analytical chemist, he taught chemistry at Grand Rapids (Michigan) Christian High School, was employed briefly at Lawrence Radiation Laboratory (Livermore, CA), then became Professor of Geology at Calvin College in 1967, retiring from full time in 1990. He lives in Grand Rapids and remains active at the College, teaching a course for senior citizens occasionally, and giving a departmental seminar talk from time to time.
(http://biologos.org/author/clarence-menninga)