Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Mary Brennan lives in Santa Fe, New Mexico. She and her husband, Curtiss, moved next door to Dorothy McKibbin, the “Gatekeeper to Los Alamos.”

Brennan has fond memories of Dorothy, who ran the Santa Fe office at 109 East Palace for the Los Alamos National Laboratory. McKibbin hosted many project workers at her house for various social events, including thirty weddings.

The Brennans are the current owners of McKibbin’s house and still reside next door. 

Related Profiles

Ray Smith

Trinity Site

Ray Smith is the historian at the Y-12 National Security Complex. His specific focus is the history of Oak Ridge, and he is intimately acquainted with the uranium enrichment processes undertaken at the Y-12, K-25, and S-50 plants during the Manhattan Project, and how the Fat Man and Little Boy bombs worked.

Kevin McKibbin

Santa Fe, NM

Kevin McKibbin was the son of Dorothy McKibbin, known by many as the “Gatekeeper to Los Alamos”. McKibbin was born in 1930 in St.

Rachel Bronson

Chicago, IL

Rachel Bronson is an American political scientist. She currently serves as the Executive Director and Publisher of the Bulletin of the Atomic Scientists.

Roger Cloutier

Oak Ridge, TN

Roger Cloutier was born in North Attleborough, Massachusetts in 1930. After serving in the U.S. Navy during the Korean War, he pursued a career in health physics at the University of Massachusetts and University of Rochester.