Early life: L&N at Middlesboro, Tennessee, L&N 1919 on. Made fuel instructor of the Cumberland Valley Division, age 20. Reasons for the improper back pressure to steam and problems it caused. Promotions through word of mouth among employees. Education by self-study. Safe method of using the air-brake on passenger and freight locomotives. Conservation engineer working on solutions to coal smoke problems concerned with hydrogen gases. Transferred to L&N in Louisville. Various innovations in smoke abatement devices on steam locomotives, boilers in the power house at Louisville shops. President Hill's years at the L&N. Importance of buying clean coal. Justice Potter Stewart's connection to coal facilities in western Kentucky. Blue Diamond Coal Mine in Eastern Kentucky provided quality of coal required.