Table 203. 



203 



CHEMICAL AND PHYSICAL PROPERTIES OF FIVE DIFFERENT CLASSES 



OF EXPLOSIVES. 



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



§ Cartridges ij in. diam. || For 300 grammes. 



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



Smithsonian Tables. 



