July 9, 1856|
|Died||September 28, 1930
Port Washington, New York
|Known for||Battle for control of ASARCO
Daniel Guggenheim Medal
|Children||Meyer Robert Guggenheim
Gladys Eleanor Guggenheim
Daniel Guggenheim (July 9, 1856 – September 28, 1930) was an American mining magnate and philanthropist, and a son of Meyer Guggenheim.
Born and raised in Philadelphia, Daniel Guggenheim was sent to Switzerland as a young man to study the Swiss lace and embroidery business, and to serve as a buyer for his father's import firm. The discovery of high-grade silver-lead ore in the Guggenheim mines in Leadville, Colorado in 1881 became the foundation for the Guggenheim fortune in mining. In 1884, Daniel returned to the US to help manage the family's booming mining and smelting business. Daniel helped to establish the Guggenheim mining and smelting business in Mexico, which by 1895 was earning profits of $1 million a year. 
In 1891 his father, Meyer Guggenheim, consolidated about a dozen of the family’s mining operations into the Colorado Smelting and Refining Company. The Guggenheim family then entered a lengthy struggle with the American Smelting and Refining Company (ASARCO), backed by the Rockefeller family. By 1901 the Guggenheims had acquired control of ASARCO, and became the dominant force in the mining industry for the next three decades. Daniel was named chairman of the board of ASARCO, and directed the trust until 1919.  
Following his father's death in 1905, Daniel assumed control of the Guggenheim family enterprises. Through ASARCO, Kennecott Copper and other family-owned companies, the Guggenheims mined tin in Bolivia, gold in the Yukon, diamonds and rubber in the Belgian Congo, diamonds in Angola, and copper in Alaska, Utah, and Chile. Daniel Guggenheim's business policies affected entire nations. "It was said that Daniel could make or break a government with a telegram," his biographer John H. Davis wrote. Daniel was power hungry and tenacious. He suffered repeatedly with stomach ulcers and hypertension. The Guggenheim family amassed enormous wealth through their mining enterprises. By 1918, the family fortune was estimated at $250 million to $300 million, making them among the richest people in the world.
Long-simmering family disagreements came to a head in 1922, when the older Guggenheim brothers were accused of milking ASARCO, which they controlled, for the benefit of their family business, Guggenheim Brothers. The ASARCO board then voted the brothers out of control. After other family disagreements and business setbacks, Daniel retired in 1923 at the age of 67. 
During the war, Daniel's son Harry Guggenheim became a pilot and both became avid supporters of aviation technology. In the 1920s they established the Daniel Guggenheim Medal for achievement in aeronautics and provided grants via the Daniel Guggenheim Fund for the Promotion of Aeronautics for aeronautics research at California Institute of Technology, Georgia Institute of Technology, Harvard University, Massachusetts Institute of Technology, New York University, Northwestern University, Stanford University, Syracuse University, the University of Akron, the University of Michigan, and the University of Washington. In 1927 he offered a $100,000 main prize and 5 $10,000 prizes for the "Guggenheim Safe Aircraft Competition", which required entered aircraft to be stable in rough air, land in 500 feet and take off in 300 feet, both over an 35 foot obstacle and be able to sustain flight at 35mph, and 38mph with the power off. 15 aircraft were entered of which only two, the American Curtiss Tanager and the British Handley Page Gugnunc met the requirements. The Curtiss Tanager was awarded as the winner in dubious circumstances, and then Handley Page sued Curtiss for unlicensed use of Handley Page slats, and worse, none of the entrants saw production or service afterwards, however indirectly the competition influenced designers in building safer aircraft.
Guggenheim also sparked controversy in the district of Alaska from 1906 onward. He was approached by Stephen Birch, a wealthy miner with big hopes for the development of Alaska and its railroads, in regards to financing Birch's developing copper claims. Guggenheim and his brother formed a gentlemen's agreement with Birch to form the Alaska Syndicate, which purchased just under half of the stock in Birch's company and all of the stock in the Copper River and Northwestern Railway. All of this sparked an "anti-Guggenheim" movement which was integral in political elections and appointments of 1908 in Alaska.
- Daniel Guggenheim, Encyclopedia of World Biography 2004
- Daniel Guggenheim at Encyclopedia Britannica
- Rothbard, Murray N. Wall Street, Banks, and American Foreign Policy. Ludwig von Mises Institute. p. 20. Retrieved January 25, 2012.
- Tower, Elizabeth: Captain David Henry Jarvis. ALaska History, Vol 5. No. 1 (Spring 1990)
- "Daniel Guggenheim Dies Suddenly at 74 of Heart Disease. Philanthropist, Capitalist and Patron of the Arts Succumbs at Port Washington Home. $2,500,000 Gift the Basis of Important Research. Liberal Donor to Many Charities. A Friend of Labor, He Had Wide Interests in Industry. Leaders in Many Fields Pay Tribute. A Life of Usefulness. Began Work in Switzerland. Was Progressive in Business. Many Business Connections. An Ardent Humanitarian. Devoted to Art. Aeronautics School Created. Newspapers Pay Tribute to His Aid to Aviation.". The New York Times. September 29, 1930. Retrieved 2008-07-30. "Daniel Guggenheim, capitalist and philanthropist, donor of the $2,500,000 Daniel Guggenheim Fund for the Promotion of Aeronautics and developer of mining and other industrial interests in many parts of the ... His father had settled there in 1848 on arrival from Switzerland, ... Wielding a family power comparable only to that of the house of Rothschild, ..."
- Aerofiles.com - The 1927 Guggenheim Safe Aircraft Competition
- Guggenheim, Daniel - Overview, Personal Life, Career Details, Social and Economic Impact, Chronology: Daniel Guggenheim
- National Mining Hall of Fame Inductee Bio
- Daniel and Harry Guggenheim – Supporters of Aviation Technology
- Daniel Guggenheim Medal recipients