Lammot du Pont I

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Lammot du Pont
Born 1831
Died March 29, 1884(1884-03-29) (aged 53)
Gibbstown, New Jersey
Education University of Pennsylvania
Employer E. I. du Pont de Nemours and Company
Spouse(s) Mary Belin
Children Pierre S. du Pont
Irénée du Pont
Lammot du Pont II
Parents Alfred Victor Philadelphe du Pont
Relatives Eleuthère Irénée du Pont, grandfather

Lammot du Pont I (1831 – March 29, 1884) was a key member of the Du Pont family in the mid-nineteenth century.


He was born in 1831.

His father was Alfred V. du Pont, the eldest son and successor of Eleuthère Irénée du Pont, the founder of DuPont. He obtained a chemistry degree from the University of Pennsylvania and entered into the family business. Lammot patented B blasting powder in 1857. His invention used an inexpensive Peruvian and Chilean sodium nitrate, which he had discovered in 1858(?) could be used to manufacture black powder more cheaply than potassium nitrate, and made DuPont a major force in the blasting powder industry. During the American Civil War, he was commissioned captain of Company B, 5th Delaware Infantry Regiment that served at Fort Delaware on Pea Patch Island. Later, he founded the Repauno Chemical Company and helped DuPont enter the high explosives business.

He died in a nitroglycerin explosion on March 29, 1884 in Gibbstown, New Jersey.[1]


A building at the University of Delaware is named in his honor. It houses laboratories of the Department of Chemistry and Biochemistry and the College of Marine Studies.[2]


Lammot du Pont married Mary Belin (1839–1913)[3] and had the following children:

  • Isabella d'Andelot du Pont (1866–1871)
  • Louisa d'Andelot du Pont (January 25, 1868 – 1926), married Charles Copeland (March 30, 1867 – February 3, 1944) on February 16, 1904, child Lammot du Pont Copeland (May 19, 1905 – July 1, 1983)
  • Pierre Samuel du Pont (1870–1954), married Alice Belin, no children
  • Sophie Madeleine du Pont (1871–1894)
  • Henry Belin du Pont (1873–1902)
  • William Kemble du Pont (1874–1907)
  • Irénée du Pont (1876–1963)
  • Mary Alletta Belin du Pont (1878–1938), married William Winder Laird, children
  • Lammot du Pont II (1880–1952)[4]
  • Isabella Mathieu du Pont (1882–1946), married Hugh Rodney Sharp (1880–1968), children
  • Margaretta Lammot du Pont (May 12, 1884 – May 1973), married Robert Ruliph Morgan Carpenter, children


  1. ^ Henry Garfield Alsberg (1955). Delaware: a guide to the first State. Hastings House. p. 439. Retrieved 1 August 2010. 
  2. ^ "Lammot du Pont Laboratory". University of Delaware. Retrieved 2009-07-20. 
  3. ^ Lynn Ann Catanese (1997). Women's history: a guide to sources at Hagley Museum and Library. Greenwood Publishing Group. p. 88. ISBN 978-0-313-30270-1. Retrieved 1 August 2010. 
  4. ^ "Lammot Du Pont, Financier, Dies At 71". Los Angeles Times. July 25, 1952. Retrieved 2009-08-20. "Lammot du Pont; for 22 years the guiding hand of the vast multimillion-dollar E. L du Pont de Nemours & Co., Inc., one of the world's greatest chemical companies, died today of heart disease." 

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