Cal Vincent Construction Co., has been in business in Hannaford since 1961.  His first office was in the building which is now the Hannaford Beauty Salon.  Cal built his own office and shop building in 1962, where he headquarters and all his maintenance work is done.  Their business consists of doing all types of cement work, excavating, erection of steel buildings, installation of elevator scales, etc.  Cal's sons, David and Owen work with him and his daughter, Barbara, is the bookkeeper.  Other employees are Ronald and Donald Hook, David Nilsen and Mike Sundquist.

Source:  Hannaford Area History North Dakota Centennial 1889 - 1989 Page 27