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<br />4V <br /> <br />DANGER <br />BLASTING AREA <br />BLAST WARNING SIGNALS <br />PRIOR TO BLAST <br />5 LONG SIREN SIGNALS AT 5 MINUTES <br />20 SHORT SIREN SIGNALS AT 3 MINUTES 28 <br />STEADY ELECTRIC SIREN AT 2 MINUTES <br />TONE CHANGE ELECTRIC SIREN AT 30 SECONDS <br />ALL CLEAR <br />ONE LONG SIREN SIGNAL OF 20 SECONDS DURATION <br />AFTER INSPECTION OF BLAST AREA <br />OBEY THE BLAST ZONE GUARDS INSTRUCTIONS <br />AT ALL TIMES <br />WARNING! ~~~ <br />EXPLOSIVES IN USE <br />POSTED AT ALL PUBLIC ACCESSES <br />20" <br />30 ~~ <br />KEEP OUT <br />BLASTING <br />-AREA - <br />14" I ~ TO <br />BLASTING <br />AREA <br />POSTED ON ALL MINE ROADS <br />WITHIN 50' OF BLASTING AREA <br />FIGURE 3.1-2 BLASTING SIGNS <br />3-5 <br />~~ <br />I~ECI6SE~ FEB 13'87 <br />