“Logs” from Sawdust (Jun, 1935)
“Logs” from Sawdust
FOR many centuries the idea of saving waste materials for fuel has been put in practice, throughout the world. While large power plants, with automatic stokers, burn dust most efficiently, and sometimes powder coal on purpose, this is not true in homes. In Europe “briquettes” made of powdered coal with a binder, for stoves have been well known for years. Now an American inventor produces round “bricks” from waste wood products, put under a pressure of some 185,000 pounds to the square inch; forming hard, smooth sticks for the fireplace.