TABLE 264. 



CHEMICAL AND PHYSICAL PROPERTIES OF FIVE DIFFERENT 

 CLASSES OF EXPLOSIVES. 



243 



* One pound of clay tamping used. t Two pounds of clay tamping used. t Rate of burning. 



Cartridges if in. diam. || For 300 grammes. 



Compiled from U. S. Geological Survey Results, " Investigation of Explosives for use in Coal Mines, 1909." 

 SMITHSONIAN TABLES. 



