I found this interview/documentary with Mayne talking about 41 Cooper Square. I've been to the building a few times and it commands a serious presence in the East Village. In writing a review of this building NICOLAI OUROUSSOFF writes the following,
"One of the most overlooked strengths of Mr. Mayne’s designs is his feel for material. He is not a finicky designer; you don’t look to his work for refined details. He tends instead to extract beauty from the crudest industrial materials: raw concrete, steel I-beams, metal screens. The connections between materials are always clearly expressed, never smoothed over, so that you can feel the memory of the workers’ hands. It is what makes his buildings — like the Diamond Ranch High School in Pomona, Calif. — so approachable."