2. Terminal Learning Objective
Action: Introduction to Modernized Demolition Initiators

3. HISTORY Developed in the late 40s Used in Civilian Market
Introduced to the Army in 1996
Supplements and Partially Replaces the M6, M7 and Detonating Cord.

4. CONSIDERATIONS MDI DOES NOT CHANGE CHARGE EMPLACEMENT OR SETUP
MDI IS STRICTLY AN IGNITION SYSTEM CHANGE.

5. CAPABILITIES Standard military demolition missions
Deepwater up to 30 meters
Quarrying(with special application).
Instant or delay initiation
Eliminates accidental initiation from static, transmitters, or electrical discharge
Hybrid (two types of firing systems)
MDI Stand Alone
MDI/Det Cord, Det Cord/MDI

6. COMPONENTS M12/M13-Cap M15-Cap M11-Cap M14 Time Fuse M81-FI M9 Holder

7. M9 HOLDER USES: PACKAGING: Secure a blasting cap (small flap end)
Secure shock tubes to the blasting cap (larger flap)
Can secure up to five shock tubes for initiation
PACKAGING:
50 Ea Per box
10 boxes per crate
Crate Total- 500

8. M9 HOLDER SECURING SHOCK TUBE 1-2 Shock Tubes Looped under holder
Tied in a knot

9. M9 ISSUES Secures only high strength caps (M11 & M14) NOT REUSBLE
Unit must request enough to support all training and live fire missions

10. M11 BLASTING CAP A branch line to a primary charge
To ignite shock tube or detonating cord
“High Strength Cap”

11. M11 DESCRIPTION 2 FLAGS J HOOK CONNECTOR Used to secure det cord
1 YELLOW (two meters from cap)
1 RED (one meter from cap)
J HOOK CONNECTOR Used to secure det cord
PACKAGING
Individual coil—30ft. long
6 coils per fiber board box
10 boxes per crate
Crate Total= 60 coils

12. M11 ISSUES Do Not Secure Det Cord and Shock Tube in the Same Holder
Do Not Hold Shock Tube When Firing
Use J- Hook to Secure to Det Cord
Plug and Sealed End

13. Relay for the initiation pulse to another relay or high strength cap
M12 TRANSMISSION LINE
Relay for the initiation pulse to another relay or high strength cap
Low Strength Cap
Command Detonation
“ Transmission Line Only”

14. M12 PACKAGING
500 FT. per spool
2 Ea spools per foil bag
4 bags per crate
Crate total- 8 spools/ 4000 Ft.

15. Relay for the initiation pulse to another relay or high strength cap
M13 TRANSMISSION LINE
Relay for the initiation pulse to another relay or high strength cap
Low Strength Cap
Command Detonation
“ Transmission Line Only”

16. M13 PACKAGING
1000 Ft spool
1 spool per foil bag
4 bags per crate
Crate Total= 4 spools/ 4000 Ft

17. M14 TIME DELAY “High Strength Cap” 5 minute delay
Length may be adjusted
Detonates Explosives, Det Cord or Shock Tube

18. M14 PACKAGING
Approx. 7 ½ ft. long
6 coils per fiber board box
10 boxes per crate
Crate Total= 60 Coils

19. M15 CAP, DELAY
“ Currently a specialized use item only”

20. M15 USES
Provide a Delay in the System for Staged Demolitions
Is usually used for Quarrying Operations

21. M15 PACKAGING 70 Ft Individual Coils 6 Coils Per Fiber Board Box
10 Boxes Per Crate
Crate Total- 60 Coils/ 4200 Ft

22. M81 IGNITER To Ignite Time Blasting Fuse (M14) Ignite Shock Tube
M81 has a stronger cap
than M60, heavier case,
and 2 plugs

23. M81 PACKAGING 5 Per Fiber Board box 60 Boxes Per Crate
Crate Total Igniters

24. SPLICING MATERIAL PACKING: USES: 5 Ea Per Plastic Bag
1 Bag Per Spool of M12 or M13
USES:
To repair a Damaged Section of Shock Tube
To increase standoff

25. Enabling Learning Objective 1
ACTION: PRIME EXPLOSIVES USING MODERNIZED DEMOLITION INITIATORS (MDI) *
CONDITIONS: You are given quarter-pound blocks of TNT, a priming adapter, string, a sandbag, M2 crimpers, and a section of Mll branch line. Some iterations should be performed in MOPP 4.
STANDARDS: You will prime the TNT with MDI-with and without the priming adapter so that the blasting cap remains in the cap well and is not damaged or handled in a way that could cause detonation of the explosive while priming.
* Reference TC Engineer Qualification Tables

26. Enabling Learning Objective 2
ACTION: CONSTRUCT A NONELECTRIC INITIATING ASSEMBLY WITH MODERNIZED DEMOLITION INITIATORS (MDI) *
CONDITIONS: You have been given detonating cord, an Mll branch line, an M12 transmission line, an M81 fuse igniter, an M14 time-delay fuse, an M9 holder, J-hooks, adhesive tape, a sandbag, and M2 crimpers. Some iterations should be performed in mission-oriented protective posture (MOPP) 4.
STANDARDS: You will construct a nonelectric initiating assembly-using MDI correctly and in sequence. You will attach the assembly to a detonating-cord firing system so that, when initiated, it will detonate as if it were live.
* Reference TC Engineer Qualification Tables

27. Enabling Learning Objective 3
ACTION: CONSTRUCT A DUAL-FIRING SYSTEM WITH MODERNIZED DEMOLITION INITIATORS (MDI) *
CONDITIONS: You are given detonating cord, an Mll branch line, an M12 transmission line, an M14 time-delay fuse, priming adapters, M9 holders, M81 fuse igniters, quarter-pound blocks of TNT, M2 crimpers, a sandbag, and adhesive tape. Some iterations should be performed in MOPP 4.
STANDARDS: You will dual prime each charge using a combination of both MDI and detonating cord. You will correctly tie the charges into a combination firing system (also consisting of MDI and detonating cord) so the charges will detonate.
* Reference TC Engineer Qualification Tables

28. SUMMARY MDI Components Constructing a Nonelectric Initiating Assembly
Constructing a Dual-firing System
Priming Explosives