Mark Muir Mills
Encyclopedia
Mark Muir Mills was an American
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 nuclear physicist
Physicist
A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from sub-atomic particles of which all ordinary matter is made to the behavior of the material Universe as a whole...

 and a developer of atomic bombs.

He was born in Estes Park, Colorado
Estes Park, Colorado
Estes Park is a town in Larimer County, Colorado, United States. A popular summer resort and the location of the headquarters for Rocky Mountain National Park, Estes Park lies along the Big Thompson River. Estes Park had a population of 5,858 at the 2010 census...

 to Enoch and Ethel Mills. Prior to college he attended Estes Park High School and then moved to Ft. Lauderdale High School
Fort Lauderdale High School
school song = sang to the tune of "Flow Gently Sweet Afton" Fort Lauderdale High School is a secondary school located in Fort Lauderdale, Florida serving students in grades 9 through 12...

, Florida
Florida
Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

. He received his B.S.
Bachelor of Science
A Bachelor of Science is an undergraduate academic degree awarded for completed courses that generally last three to five years .-Australia:In Australia, the BSc is a 3 year degree, offered from 1st year on...

 from the California Institute of Technology
California Institute of Technology
The California Institute of Technology is a private research university located in Pasadena, California, United States. Caltech has six academic divisions with strong emphases on science and engineering...

 in 1940. During World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, he served as a physicist at the Jet Propulsion Laboratory
Jet Propulsion Laboratory
Jet Propulsion Laboratory is a federally funded research and development center and NASA field center located in the San Gabriel Valley area of Los Angeles County, California, United States. The facility is headquartered in the city of Pasadena on the border of La Cañada Flintridge and Pasadena...

, heading up the solid propellant section. He was also a physics instructor and lectured for the aeronautics department at Caltech.

It was during the war in 1942 that he married Pauline Riedeburg. He completed his Ph.D.
Ph.D.
A Ph.D. is a Doctor of Philosophy, an academic degree.Ph.D. may also refer to:* Ph.D. , a 1980s British group*Piled Higher and Deeper, a web comic strip*PhD: Phantasy Degree, a Korean comic series* PhD Docbook renderer, an XML renderer...

 in physics from Caltech in 1948.

Following his graduation he started working at North American Aviation
North American Aviation
North American Aviation was a major US aerospace manufacturer, responsible for a number of historic aircraft, including the T-6 Texan trainer, the P-51 Mustang fighter, the B-25 Mitchell bomber, the F-86 Sabre jet fighter, the X-15 rocket plane, and the XB-70, as well as Apollo Command and Service...

, performing theoretical work in their atomic energy research department. He and his colleagues made valuable contributions in the field of nuclear reactor
Nuclear reactor
A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. Most commonly they are used for generating electricity and for the propulsion of ships. Usually heat from nuclear fission is passed to a working fluid , which runs through turbines that power either ship's...

 technology. In 1951 he became technical director at Project SQUID
Project squid
Project SQUID was a United States defense effort post-WWII effort to develop and improve pulsejet and rocket engines, run by the Office of Naval Research....

 at Princeton University
Princeton University
Princeton University is a private research university located in Princeton, New Jersey, United States. The school is one of the eight universities of the Ivy League, and is one of the nine Colonial Colleges founded before the American Revolution....

, where basic research was performed in aircraft propulsion. In 1952 he returned to his work in reactor design at North American.

In 1954 he joined the radiation laboratory at the University of California, becoming head of the theoretical division. By 1955 he was a part-time lecturer at the university, on the subject of nuclear reactor theory. He also helped organize the nuclear engineering program at the institution. He would become a professor of Nuclear Engineering at the university in 1957. He was also made chairman of the school's division of nuclear engineering
Nuclear engineering
Nuclear engineering is the branch of engineering concerned with the application of the breakdown as well as the fusion of atomic nuclei and/or the application of other sub-atomic physics, based on the principles of nuclear physics...

.

In 1958 he took a leave of absence to become deputy director of the Livermore radiation laboratory at the University of California. It was during this period that he was killed during an unfortunate accident at the Eniwetok Proving Ground, located on the Eniwetok Atoll
Enewetak
Enewetak Atoll is a large coral atoll of 40 islands in the Pacific Ocean, and forms a legislative district of the Ralik Chain of the Marshall Islands. Its land area totals less than , surrounding a deep central lagoon, in circumference...

 in the Marshall Islands
Marshall Islands
The Republic of the Marshall Islands , , is a Micronesian nation of atolls and islands in the middle of the Pacific Ocean, just west of the International Date Line and just north of the Equator. As of July 2011 the population was 67,182...

. He was flying in a helicopter
Helicopter
A helicopter is a type of rotorcraft in which lift and thrust are supplied by one or more engine-driven rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forwards, backwards, and laterally...

 that was forced down as a result of torrential rain. This accident occurred during the preparations for a series of atomic bomb tests.

Dr. Mills and his wife had two children, Mark John and Ann.

Awards and honors

  • Presidential citation for significant contributions to the national defense.
  • The Mark Mills Memorial Library, part of the Department of Nuclear Engineering at the University of California at Berkeley, was named for him.
  • American Nuclear Society's Mark Mills Award is named for him.
  • The crater Mills
    Mills (crater)
    Mills is a small crater that lies on the far side of the Moon. It is located to the northeast of Henderson and to the south of Kohlschütter.This is an undistinguished impact crater that is roughly circular in form, with a slight outward bulge to the northwest. This bulge may be due to the merger of...

     on the Moon
    Moon
    The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

    is named after him.

External links

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