Lou died Feb. 2, 2012, in Santa Rosa, Calif.
He prepared at Phillips Exeter Academy and majored in chemistry at Princeton, where he played interclub hockey and squash and joined Charter Club. He roomed first with Bob Jackson and then with MacKinnon and Stebbins.
In 1942, Lou joined DuPont. In 1944 he was sent to work on the Manhattan Project in Oak Ridge, Tenn., and then to Hanford, Wash., where General Electric took control in 1946. GE transferred Lou to Schenectady, N.Y., in 1956, first to its general engineering laboratory and then, in 1969, to the Knolls Atomic Power Laboratory, where he was involved in designing and supervising the building of nuclear reactor plants for the Navy.
After retiring in 1981, Lou and his wife, Olivia, traveled extensively until they followed their children west to Santa Rosa in 1986.
Lou is survived by his wife of 67 years, Olivia Reed Kendall; his three daughters, Patricia, Trudy, and Mary; five grandchildren; five great-grandchildren; and one great-great-grandchild.