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?
Great Depression 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.
Andrew Mellon Andrew William Mellon ( ; March 24, 1855 – August 26, 1937) was an American banker, businessman, industrialist, philanthropist, art collector, and politician. From the wealthy Mellon family of Pennsylvania, he established a vast business empire before transitioning into politics. He served as United States Secretary of the Treasury from March 9, 1921 to February 12, 1932, presiding over the boom years of the 1920s and the Wall Street crash of 1929. A conservative Republican, Mellon lowered taxes and government spending in the aftermath of World War I.