The property takes up 75 acres. With the addition of three new buildings the American Wollen Company and the Mill are in their heyday. The fortunes of the industry begin to decline over the next 30 years. After a brief spell of prosperity during World War II, the Mill phases out production as demand for woolen goods declines. 1,200 employees lose their jobs.
Space is rented to business and industrial tenants.
Three engineers set up shop on the second floor of Building 12. 1960 Over thirty firms are located within the Mill complex. The Mill has over 1 million square feet in 19 buildings residing on 11 acres. The 100th anniversary of the Mill Clock is celebrated. 1993 Digital Equipment Corporation announces that it plans to leave the Mill complex.