Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,478 pages of information and 233,901 images on early companies, their products and the people who designed and built them.
French engineer, Engineer of the Ponts et Chaussées, Director of the Établissements Cail, president of Société française de constructions mécaniques, vice-president of the Comptoir central d'achats industriels.
He was the son of Louis Le Chatelier (1815-1873). One of his brothers was the famous chemist Henry Louis Le Chatelier (1850-1936).
See French Wikipedia entry.