Show THE KELLY POWDER HEATER from mines and mining B P F kelly an old time colorado tunnel driver has invented and is putting on the market a powder heating machine that is very highly spoken of by practical miners this powder heater consists of a box made of heavy galvanized iron lined with asbestos and painted A pan made of heavy galvanized iron with a screw cap is placed in the bottom of the box and over that a rack made of wires with meshes for holding the sticks of powder no two sticks being in contact with each other the can is filled with water and placed on the forge after the water has reached the boiling point the cap is screwed on tight and the can placed in the bottom of the box with the wire frame containing the powder over it within two hours the powder is evenly heated without drawing the glycerine to the wrappers as is done by other otlia methods this purpose is accomplished by the even heat given to the powder with a constantly decreasing temperature the danger point cannot possibly be attained the box is so carefully insulated that the heat is retained for from twenty four to forty eight hours the low regular temperature keeps the powder in its original state until it is shot thereby saving from twenty to fifty per cent over powder heated in any other way for further particulars send to B F kelly atlas block salt lake city utah |