The following article is a digest from the Book, "From Peenemunde to Outer Space", commemorating the fiftieth birthday of Wernher von Braun, March 23, 1962 condensed by H. M. Hammac).
This article was published in the April 1967 issue of Contamination Control, Volume VI, Number 4. States: "The extreme sensitivity of critical parts in the Apollo /Saturn Instrument Unit (IU) has demanded unique clean room techniques by International Business Machines Corporation."