Show 7 ANA I 1 A f the he ancient quarries barries 0 of ptolemaic Ptole mais mal s like a gigantic staircase the mountain of gebel slopes back from the waters of the nile here in the ath century BC egyptians quarried stone for the streets and buildings of ptolemaic Ptole mais one can still distinguish the grooves made by the tools of the workmen and the instructions inscribed on the rock by the foremen when it became too costly to remove the overburden subterranean quarries were started the workman on his raised platform wielding a pointed tool toof had no easy task in making the first cut forthe for the roof in his system of right stepping production at these quarries was insignificant compared with the enormous daily tonnages ton nages made possible by modern machinery and explosives but conditions today which demand such large production also necessitate the prevention of waste in time labor and materials now even dynamite one of mans greatest labor savers must be scientifically selected on work for which it is suited hercules special no I 1 reduces blasting costs it contains about 35 percent more cartridges per box than 40 percent dynamite which it frequently replaces cartridge for cartridge for several years we have pointed out the economy of hercules special no 1 it contains nothing but the highest grade of standard mat materials aerials and by wide use at many quarries and mines has proved its dependability our new book eliminating waste in blasting was written to assist you in in reducing blasting costs write to our advertising department king st wilmington del for a free copy allentown pa chicago ill III hazleton Har feton pa louisville ky pittsburgh pa salt like lake city utah birmingham ala denver coo colo huntington W va new york city pottsville spottsville Potts ville pa san francisco cal buffalo N Y duluth minn joplin mo norristown nom pa st louis mo Wilkes barre pa chattanooga term tenn los angeles cal pittsburg kan wilmington del |