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C~ <br />• <br /> <br /> WARNING! <br /> EXPLOSIVES IN USE <br /> WARNING SIGNAL <br /> THREE (3) SHORT WHISTLES <br /> ALL CLEAR SIGNAL <br /> RADIO COMMUNICATION AND <br />ONE LONG CONTINUOUS WHISTLE <br /> <br />BLASTING WARNING SIGN <br />(24" X 36" reflective red) <br />BLASTING AREA <br />BLASTING AREA SIGN <br />(6" X 24" reflective red) <br />FIGURE 26-5 <br />5 <br />