Primary Instructor SSG Ratliff Terminal Learning Objective Action

Primary. Instructor SSG Ratliff

Terminal Learning Objective Action: Introduction to Modernized Demolition Initiators

HISTORY • Developed in the late 40 s • Used in Civilian Market • Introduced to the Army in 1996

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

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

COMPONENTS M 12/M 13 -Cap M 15 -Cap M 11 -Cap M 14 Time Fuse M 9 Holder M 81 -FI 8

M 9 HOLDER USES: • 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

M 9 HOLDER SECURING SHOCK TUBE � 1 -2 Shock Tubes Looped under holder � 3 -5 Shock Tubes Tied in a knot

M 11 BLASTING CAP � A branch line to a primary charge � To ignite shock tube or detonating cord � “High Strength Cap”

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

M 12 TRANSMISSION LINE � Relay for the initiation pulse to another relay or high strength cap � Low Strength Cap � Command Detonation “ Transmission Line Only”

M 12 PACKAGING • 500 FT. per spool • 2 Ea spools per foil bag • 4 bags per crate • Crate total- 8 spools/ 4000 Ft.

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

M 13 PACKAGING • 1000 Ft spool • 1 spool per foil bag • 4 bags per crate • Crate Total= 4 spools/ 4000 Ft

M 14 TIME DELAY • “High Strength Cap” • 5 minute delay • Length may be adjusted • Detonates Explosives, Det Cord or Shock Tube

M 14 PACKAGING • Approx. 7 ½ ft. long • 6 coils per fiber board box • 10 boxes per crate • Crate Total= 60 Coils

M 15 CAP, DELAY “ Currently a specialized use item only”

M 15 USES • Provide a Delay in the System for Staged Demolitions • Is usually used for Quarrying Operations

M 15 PACKAGING • 70 Ft Individual Coils • 6 Coils Per Fiber Board Box • 10 Boxes Per Crate • Crate Total- 60 Coils/ 4200 Ft

M 81 IGNITER • To Ignite Time Blasting Fuse (M 14) • Ignite Shock Tube • M 81 has a stronger cap than M 60, heavier case, and 2 plugs

M 81 PACKAGING • 5 Per Fiber Board box • 60 Boxes Per Crate • Crate Total - 300 Igniters

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