Marion Caleb Dean
Tuesday, April 20, 2010

Marion C. Dean Company Founder

Marion Caleb Dean, 91, founder of a Dulles engineering and
systems-integration firm that became one of Loudoun County's largest
employers, died of cancer April 11 at his home in Locust Grove, Va.

He founded M.C. Dean in 1949 and built his business by working on such
projects as National Airport, Bolling Air Force Base and the Naval Research
Laboratory. His firm designed lighting systems for the Washington Monument,
the Tomb of the Unknowns and the Iwo Jima Memorial.

In 2008, The Washington Post reported that M.C. Dean was developing the
primary command and control center for NATO forces in Afghanistan. The
company was one of the main firms designing and engineering the Pentagon's
renovation and had just completed surveillance systems for Atlanta's
rapid-transit system and airport.

M.C. Dean now employs more than 3,300 people worldwide and provides
system integration, electrical, electronic security, life-safety,
telecommunications, instrumentation and control services for complex facilities.

Mr. Dean was born in James City County, Va., and grew up in Washington,
where he graduated in 1937 from
Central High School. He served in the
Navy during World War II aboard a landing craft that supported the Seabees
in the Pacific.

In 1952, Mr. Dean created an electrical apprenticeship program that is the
largest and oldest of its kind in the region, with more than 400 students
enrolled each year.

He retired in 1980 and was succeeded by his son Casey Dean, and in 1997 by
his grandson Bill Dean.

His first wife, Betty Carol Dean, died in 1961. His second wife, May Dean,
died in 1977. His third wife, Shirley Dean, died in 1999.

Survivors include three children from his first marriage, Herbert McKinley
Dean of Reno, Nev., Marion Casey Dean of Sarasota, Fla., and Diane
Dean-Palermo of Locust Grove; 12 stepchildren; five grandchildren; and four

-- Patricia Sullivan