Add this 1978 copyright edition of Hercules - Explosives Engineers' Guide to your library collection.  This guide was used for determining:

- solid cubic yards of material per foot of borehole

- pounds of explosives per foot of borehole

- specific gravity, detonation velocity, and energy of Hercules explosives

- scaled distance and

- weights of materials

Sure to be a welcome addition to your Hercules collection.