the essential thing necessary to safely handle [tetraethyl lead] was careful discipline of our men…[tetraethyl lead] becomes dangerous due to carelessness of the men in handling it.
Thomas Midgley Jr. vice president of General Motors. 1920s. From Dying for Work: Workers’ Safety and Health in Twentieth Century America, by David Rosner and Gerald E. Markowitz. Indiana University Press: 1987. p. 130.