E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont company. The company was established in 1802 by Pierre Samuel du Pont de Nemours (1739-1817) and his son Eleuthère Irénée du Pont (1771-1834) the company began with the production of gunpowder. This collection consists of photographs that document two separate activities. First grouping shows a nyalite (and explosive) outdoor safety demonstration (1905) probably conducted in the Hagley powder yards.

Tazewell Lamar McCorkle Sr. was regarded as a leading authority in the field of commercial explosives. Trained as a chemical engineer, McCorkle spent more than thirty years as a sales representative with the Explosives Department of E.I. du Pont de Nemours & Company. The papers are composed entirely of copies of official DuPont Company materials that McCorkle retained after his retirement. These files provide extensive documentation of departmental policies and procedures governing the storage and delivery of DuPont explosives.