Original World War 2 business industry trade magazine vintage ad for GRINNELL COMPANY, INC. of Providence, RI.  The Most Wanton Destruction in History.  When fire destroys a plant or vital war materials so sorely needed by our fighting forces, it is little less than a national calamity.  Use Grinnell Automatic Sprinklers for Production Protection.  Old 1943 WW2 era propaganda magazine advertisement.