Morris R. Jeppson

Morris R. Jeppson was an American physicist and Second Lieutenant in the United States Army Air Forces who served as a weaponeer on the Enola Gay, the B-29 Superfortress that dropped the first atomic bomb on Hiroshima. His critical role involved arming the Little Boy nuclear weapon during the historic mission, a key part of the Manhattan Project's operational culmination. Following the war, Jeppson pursued a career in applied physics and business, remaining a notable figure in the history of World War II and the dawn of the Atomic Age.

Early life and education

Morris Richard Jeppson was born in Logan, Utah, and demonstrated an early aptitude for science and engineering. He attended Brigham Young University before transferring to the prestigious University of California, Berkeley, a major center for physics research. His studies at Berkeley were interrupted by the outbreak of World War II and the subsequent mobilization of scientific talent for the war effort. Jeppson's academic background in physics made him a prime candidate for recruitment into the secretive Manhattan Project, which was drawing personnel from leading institutions like the Massachusetts Institute of Technology and the University of Chicago.

Military career

Jeppson enlisted in the United States Army Air Forces in 1943 and received a commission as a Second Lieutenant. Due to his technical expertise, he was assigned to the elite 509th Composite Group, a special unit commanded by Colonel Paul Tibbets created specifically to deliver atomic weapons. The group trained extensively at Wendover Air Force Base in Utah and on Tinian in the Mariana Islands. Jeppson underwent rigorous training in the handling and electronics of the complex nuclear devices being developed at Los Alamos, preparing for a mission whose full nature was known only to a select few within the Allied command structure.

Role in the atomic bombing of Hiroshima

On August 6, 1945, Jeppson served as the assistant weaponeer under Navy Captain William Sterling Parsons aboard the Enola Gay. His specific duty was to monitor the electrical systems of the Little Boy bomb and, during the flight from Tinian to Japan, to replace green safety plugs with red arming plugs, a procedure critical to making the weapon live. This action was successfully completed over the Iwo Jima area. He then monitored the console to confirm the bomb's operational status as the aircraft approached the Pacific theater target. The weapon was released over the city of Hiroshima, resulting in a devastating explosion that precipitated Japan's surrender and the end of World War II.

Later life and career

After his discharge from the military in 1946, Jeppson returned to academia, earning a master's degree in physics from Stanford University. He applied his knowledge to the burgeoning fields of microwave technology and particle accelerator design, working for companies like EG&G and Lawrence Livermore National Laboratory. He later became a successful entrepreneur, founding or co-founding several technology firms in Nevada and California focused on laser applications and electronic components. Unlike some veterans of the 509th Composite Group, Jeppson generally avoided the public spotlight regarding his role in the Atomic bombings of Hiroshima and Nagasaki, though he participated in historical reunions and interviews.

Personal life and death

Morris Jeppson was married and had children. In his later years, he resided in Las Vegas, Nevada, where he was an active member of the local community. He maintained a lifelong interest in science and technology. Morris R. Jeppson died of natural causes on March 30, 2010, in Las Vegas. He was interred at Bunker's Eden Vale Memorial Park in the Las Vegas valley. His passing was noted by historical associations and veterans' groups connected to the Manhattan Project and the United States Army Air Forces.

Category:American military personnel of World War II Category:Manhattan Project people Category:1922 births Category:2010 deaths