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40 in <br /> nj Cu ' L <br /> BLAST WARNING SIGNALS <br /> PRIOR TO BLAST <br /> 5 LONG SIREN SIGNALS AT 5 MINUTES <br /> 20 SHORT SIREN SIGNALS AT 3 MINUTES r' <br /> STEADY ELECTRIC SIREN AT 2 MINUTES <br /> TONE CHANGE ELECTRIC SIREN AT 30 SECONDS 1.0 <br /> ALL CLEAR Cr? <br /> ONE LONG SIREN SIGNAL OF 20 SECONDS DURATION <br /> AFTER INSPECTION OF BLAST AREA <br /> OBEY THE KAST ZON <br /> D. <br /> AT ALL TIMS <br /> WARNINGIN <br /> EXPLOSIVES IN USE <br /> Orange Background With Black Lettering <br /> POSTED AT ALL PUBLIC ACCESSES <br /> 20" 30" <br /> KEEP OUT <br /> DANGER <br /> STOP <br /> BLASTING 1411 <br /> BLASTING <br /> - AREA - AREA <br /> POSTED ON ALL MINE ROADS <br /> WITHIN 50' OF BLASTING AREA <br /> FIGURE 3.1-2 BLASTING SIGNS <br /> 3-5 _ <br /> Revision: <br /> Approved: <br />