1

2

(Exploder)

Det-cord

INITIATING DEVICES

3

4

σt = 120 KgF

σt = 100

σt = 95

σt = 100 KgF

Detonating chords

5

Detonating Chord

6

For Trunkline ExtendingFor Tying Downline to surface Trunkline

7

Detonating relay Connectors (DRC)

45 ms

15 25

35 ms

Red = 60 ms

8

9

Signal Tube NONEL Detonator

[HMX]

3 mm1 mm

10

ELECTRIC DETONATORS

a) Instantaneous Elect Detb) “L” Series Millisecond Delay Detc) Half Second (LP) Delay Detd) Electronic Detonators

a) Magnadet Detonatorsb) Magna Primer

11

FuseheadComposition1- Ignition Composition(Lead Mono-Nitro Reserconate+Potassium Chlorate)

2- Flashing Composition(Potassium Chlorate+ Charcoal)

3- Protective Coating(Nitro Cellulose)

1 23

Instantaneous

12

MS Delay Electric Dets

Half Second Delay Elect Dets

13

Electric Det

• Carrick coal mine detonators

• Ten delays ( 0 -10)• Delay interval = 30 sec

Carrick (Copper Tube) Det

Exploders

14

Exploders

15

16

I = 10-7 A

R =1010 Ohm

V = 1000 V

E = 0.6 mJ

C = 300 pF= 300 x10 -12F

17

Magnadet High Frequency Electric Det.

Concept: Detonator wires are connected to a ring transformer consisting of a ferite ring – TOROID.

Toroid is frequency sensitive activated by the special AC powered exploder operating in the frequency range of 12 000 – 25 000 Hz. [AC]

18

Electronic detonator

Micro Chip

19

20

21

Top (Collar) Vs Bottom Initiation

22

ANZOMEX PRIMERS (Boosters)

• Anzomex boosters are cast water proof primers, made principally of cast pentolite (mixture of PETN, TNT and other miner ingredients– High strength, and high densi– High VOD (7000 m/s)– Lower shock sensitivity, friction, impact.

END