Alexander H. Hartley became a member of the Chemical and Metallurgical Society of South Africa (Johannesburg) in 1896. In May 1899 he read a short paper, "Notes on precipitation of gold from cyanide solutions", at one of its meetings. He was still a member of the renamed Chemical, Metallurgical and Mining Society of South Africa in 1905 and at that time was employed as an assayer at the Burham Gold Mining Company, Johannesburg. By 1906 he had become a life member of the South African Association for the Advancement of Science. He was still listed as living in Johannesburg in 1910.