A Century of Progress in Fuel Technology
This article, by O.P. Hood of the U.S. Bureau of Mines, appeared in Coal-Heat magazine in June 1933.
Heating Museum → Heating History Help Topics
Take a stroll through HVAC history in our Heating Museum. This section of our website preserves history and answers that so-important question: What the heck is that thing? Whenever you run across anything unusual, chances are you’ll find the old literature about it right here.