The Yale University School of Nursing, is the oldest university school of nursing in the world. To celebrate its 90th anniversary it dedicated its relocation to a newly renovated cast concrete building on the West Campus. Wiss, Janney, Elstner Associates specified D/2 Biological Solution for the cleaning of the cast concrete facade.
Northwestern University Library is a prime example of Chicago Brutalist architecture. It was completed in 1970 and designed by the acclaimed architect Walter Netsch of Skidmore Owens & Merrill. The cast concrete building was cleaned in 2015 using D/2 Biological Solution.