Dolphus Edward Milligan (June 17, 1928, Brighton, Alabama – October 18, 1973) was an American chemist.
 He received his bachelor's degree in chemistry from Morehouse College in Atlanta in 1949.
 He earned a Master of Science (M.S) from Atlanta University in 1951.
 He then accepted a position as a chemistry instructor in Fort Valley State College in Georgia.
 He joined the faculty at the University of California at Berkeley while pursuing his doctorate studies.
 In 1996, When Robert F. Curl accepted the Nobel Prize in chemistry he expressed his appreciation for Milligan’s help on his earlier more volatile experiments.
 Milligan obtained his Ph.D in chemistry in 1958, his research focused on spectroscopic study of reaction intermediates at extremely low temperature.
 After completing this doctorate he joined the Melton Institute of industrial research in Pittsburg where he conducted basic research.
 In 1963, he joined the National Bureau of Standards as a physical chemist.
 In 1970, he became an adjunct professor at Howard University while retaining his position at Mellon.
 In 1971, he became the chief of the photochemistry section of the National Bureau of Standards (NIST).
The Great Recession was a period of general economic decline observed in world markets during the late 2000s and early 2010s.
 The scale and timing of the recession varied from country to country.
 In terms of overall impact, the International Monetary Fund concluded that it was the worst global recession since the 1930s (the Great Depression).
 The causes of the recession largely originated in the United States, particularly related to the real-estate market, though choices made by other nations contributed as well.
 According to the U.S. National Bureau of Economic Research (the official arbiter of U.S. recessions) the recession, as experienced in that country, began in December 2007 and ended in June 2009, thus extending over 19 months.
 The Great Recession was related to the financial crisis of 2007–08 and U.S. subprime mortgage crisis of 2007–09.
 The Great Recession resulted in the scarcity of valuable assets in the market economy and the collapse of the financial sector (banks) in the world economy.
 The banks were then bailed out by American taxpayers.
Allen Varley Astin (June 12, 1904 – January 28, 1984) was an American physicist who served as director of the United States National Bureau of Standards (now the National Institute of Standards and Technology) from 1951 until 1969.
 During the Second World War he worked on the proximity fuse.
 He was an advocate for introduction of metric weights and measures to the United States.
Ernest Ambler (born November 20, 1923) is a British-American physicist who served as the Acting Under Secretary for Technology in the Department of Commerce (1988–89), as director of the United States' National Bureau of Standards (NBS, 1975–89), and as the first director of the United States' National Institute of Standards and Technology 1988–89.
SEAC (Standards Eastern Automatic Computer" or Standards Electronic Automatic Computer") was a first-generation electronic computer, built in 1950 by the U.S. National Bureau of Standards (NBS) and was initially called the "National Bureau of Standards Interim Computer", because it was a small-scale computer designed to be built quickly and put into operation while the NBS waited for more powerful computers to be completed (the DYSEAC).
 The team that developed SEAC was organized by Samuel N. Alexander.
 SEAC was demonstrated in April 1950 and in May 1950 it went into full production, making it the first fully functional stored-program electronic computer in the US.
Lyman James Briggs (May 7, 1874 – March 25, 1963) was an American engineer, physicist and administrator.
 He was a director of the National Bureau of Standards during the Great Depression and chairman of the Uranium Committee before America entered the Second World War.
 The Lyman Briggs College at Michigan State University is named in his honor.
Frederick A. Kolster (January 13, 1883 - 1950) was Swiss-born United States electrical engineer and inventor.
 He worked at the National Bureau of Standards from 1911 to 1921.
 While at the NBS, he pioneered a number of developments in radio signal detection and radio compass work, including the Kolster Decremeter.
 In 1913, he convinced the Bureau of Lighthouses to install radio beacons at all important lighthouses and light ships.
 Kolster also patented in 1915 a radio direction finder, used in the subsequent World War I by U.S. destroyers at sea to locate German submarines.
 In 1921, he left the National Bureau of Standards to join the Federal Telegraph Company as chief research engineer, as part of the company's bid to commercialize the radio compass technology to ships.
 Products manufactured under his research name came under the Federal-Brandes name (after November 1926).
 The commercial efforts failed, however, and the subsidiary of Federal Telegraph was spun off in April 1928, when the name was changed to Kolster Radio Corporation and a new stock offering was issued.
 The new company continued until dissolution in 1931.
The National Bureau of Criminal Identification (NCBI), also called the National Bureau of Identification was an agency founded by the National Chiefs of Police Union in 1896, and opened in 1897, to record identifying information on criminals and share that information with law enforcement.
 It was located in Chicago until 1902, at which point it was moved to Washington DC.
 Allan Pinkerton donated his agency's collection of photographs to the newfound agency.
 NCBI initially only collected photographs and Bertillon records, which limited the Bureau's effectiveness.
 Its effectiveness greatly increased when it began collecting fingerprints.
 NCBI ceased to exist as an independent organization when it was absorbed into the Federal Bureau of Investigation in 1924.
The Depression of 1882–85 or Recession of 1882–85 was an economic contraction in the United States that lasted from March 1882 to May 1885, according to the National Bureau of Economic Research.
 At 38 months in length this is the third-longest recession in the NBER's chronology of business cycles from 1854 to present.
 Only the Great Depression of 1929-1941 and the Long Depression of 1873–79 were longer.
The Great Depression was a severe worldwide economic depression that took place mostly during the 1930s, originating in the United States.
 The timing of the Great Depression varied across nations; in most countries it started in 1929 and lasted until 1941.
 It was the longest, deepest, and most widespread depression of the 20th century.
 In the 21st century, the Great Depression is commonly used as an example of how far the world's economy can decline.

Question: What years would Lyman James Briggs have been the director of the National Bureau of Standards, if he was a  a director of the National Bureau of Standards during the Great Depression?
Answer: mostly during the 1930s