Your fuel efficiency plans— to ensure maximum output from each ton of coal—will rest on a solid basis if your stoker knows his job. To help in training the stoker, the Fuel Efficiency Committee has prepared a manual written specially for him. It gives practical details of how the job can best be done, and also explains why it should be done in a certain way. It describes the proper opera- tion of all the commoner types of shell and central heating boilers. STOKING IS A SKILLED JOB The Stoker's Manual has just been published by H.