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ee a oT ne 2 The blasting Cap must somenor be Inserted into the ~acs of the secondary high exrlosive, For example, ina stick of cynamite a hole mist be made to insert the cap. BLASTING we AF III, Setting off blasting caps 1} non-electric. a fuse is simely inserted into the car . é and lit 2?) electric- ne riece of insulated wire is Inserteé ints the car, but the tnsulettion on the portion that casses throuch the flesh cherge is re movec, The ends cf the w're are conneczes to an electrical Power source (e.g, dry cell battery). “hen the circu't igs completed = the portion of the wire where the insulation ts removed will become hot enough to set ers the flash charge, HoN-INSULATES WIRE a TED . TNSULA BLASTING DRY Cu mo CRP GATTERY Fig. 3 XPLOSIVE IV. Delay devices é ‘ If the above arvaratus were connected with an alarm clocx So that the circuit would not be completed unt?1 the clarn went off the timing of the exrlasincn can be totally controlled, The simrlest exexr-le ts thet cf an alarm clock with hamvzer anc bell mechanism, “When the slarr goes off , the hamzer will strike the bell, panne Lge y G Fie.4 If the wire in Fig, Z were connected to the bell and harrer of the clock, then vhen the alarm went off the circuit would be comcleted and the ex-losive “ould detonate, TNSVULATES wit Non !NGu.AT LO YL — wiae - BLAST wh Cae O8v CELe a I a ae TTT (et RT ee et Oe SI ee a ws aT are SS ‘rs x ra a ” fan gen “> Te we vs pr eA ee a Re Se ee a Rae ah Mee “tet SE oe Cre gt ie Oe CL aS r= Core, - = See a GE? os s ~, Pomatar. Po RYE Ce Oye J < . - acai ere Cet Sea EF agp ee FE OS OI Pf Te Dl Saye oy EE oe ~ 43 ee ndnenein ens enl :