Charles Crichton worked for the New Kleinfontein Company, Ltd, Benoni, in 1921. He seems to have had no tertiary qualifications, but none the less published a paper on "The assay of gold-bearing cyanide solutions by electrolysis" in the Journal of the Chemical, Metallurgical and Mining Society of South Africa (1911/12, Vol. 12(3), pp. 90-92). He was a founding member of the South African Association of Assayers (established in June 1919; later the South African Institute of Assayers and Analysts), served as a member of its first council, and was elected its president for 1921/2 and 1922/3. In 1920 he became a member also of the South African Association of Analytical Chemists, which in 1921 became the South African Chemical Institute.