In Addison v. Holly Hill Fruit Products, Inc., 322 U.S. 607, 64 S.Ct. 1215, 1220, 88 L.Ed. 1488 (1944), the Supreme Court, in considering the regulation as it related to fruit, held that Congress did not intend "to allow the Administrator to discriminate between small and bigger establishments within the zone of agricultural production". It was stated that if Congress had any such intention it "wholly failed to express its purpose." The only question considered related to that portion of the regulation excluding plants having more than a given number of employees. The court specifically refrained from passing upon the validity of the provision of the regulation which excluded from the exemption plants within a stated distance from cities or towns having a population of 2500 or more.