MODERNIZED DEMOLITION INITIATORS MDI 051 193 1002 051

MODERNIZED DEMOLITION INITIATORS (MDI) (051 -193 -1002) (051 -193 -1004) 10/22/2021 2

INTRODUCTION l "ON TODAY'S BATTLEFIELD, ONE OF YOUR MANY MISSIONS AS A CAVALRY SCOUT MAY BE TO USE AN ARRAY OF HIGH EXPLOSIVE DEVICES TO CREATE OBSTACLES AND TO DELAY OR CHANNEL THE ENEMY INTO ENGAGEMENT AREAS. THE TRAINING YOU RECEIVE HERE TODAY WILL AID YOU IN YOUR ABILITY TO DESTROY BRIDGES, MAKE ROADS IMPASSABLE, OR TO FALL TREES IN A PATTERN (ABATIS). USING MODERN DEMOLITION INITIATOR TO FIRE DEMOLITION CHARGES WILL ENABLE YOU TO ACCOMPLISH THESE MISSIONS. FAILURE TO APPLY THESE SKILLS WILL CAUSE INJURY OR DEATH TO YOURSELF OR FELLOW SOLDIERS, ULTIMATELY CAUSING FAILURE OF YOUR MISSION". 10/22/2021 3

Construct a Nonelectric Delayed Initiating/Detonating Assembly The basic materials consist of M 14 time fuse with blasting cap, M 81 igniter, and explosives. l The minimum safe distance, when in the open, is 300 meters for explosive which are between 1 and 27 pounds. l 10/22/2021 4

Construct a Nonelectric Delayed Initiating/Detonating Assembly l The minimum safe distance when not in the open is figured by walking at a normal pace to an area which will be clear of the charge when detonated. The distance is largely dictated by terrain. Factors to be considered is the amount of gravel or stones in the immediate vicinity of the charge, abrupt changes in elevation in the immediate vicinity of the charge, large trees and boulders, buildings, etc. 10/22/2021 5

Inspecting M 81 / M 14 Inspect the M 81 igniter: – Check for dents cracks or chips. – Ensure safety pin is locked in place. – Ensure time fuse adapter plug and shock tube adapter plug are present and secured in M 81. l Inspect M 14 Time Blasting Fuse: – Inspect fuse for cracks or loose powder. – Check blasting cap for dents, loose powder, and ensure cap is secured to fuse. l 10/22/2021 6

Insert Blasting Cap into C-4 Make a hole in C-4 large enough to accommodate the entire blasting cap using a stick or similar material. l Insert M 14 blasting cap into hole of C-4. l Mold the C-4 around the fuse at the top of blasting cap. WARNING: ONLY APPLY ENOUGH PRESSURE TO MOLD THE C-4. l 10/22/2021 7

Insert Blasting Cap into TNT Use a sharp knife, razor blade, etc to cut 1/2 inch and metal seal from free end of M 14. WARNING: YOU SHOULD MAKE SURE YOU WEATHERPROOF THE CUT END OF THE M 14 IF THE CHARGE WILL REMAIN FOR ANY EXTENDED PERIOD OF TIME. l Pass the non blasting cap end of the M 14 through the slit in the priming adapter with the threads pointed towards the blasting cap. l 10/22/2021 8

Insert Blasting Cap into TNT Pull the cap into the adapter until the blasting cap is seated into the adapter. WARNING: DO NOT APPLY PRESSURE TO THE BLASTING CAP. l Place the blasting cap and adapter into the hole of the TNT. l Screw the adapter into the TNT. l 10/22/2021 9

Attach M 14 Fuse to M 81 Igniter l l l Turn M 81 end cap 1/2 turn counterclockwise. Do not completely remove. Remove both shipping plugs from the igniter. If using C-4, cut 1/2 inch and metal seal from free end of M 14 IAW step (5 B), (a) Insert fresh cut end of fuse in the space created by removing the shipping plug. Tighten cap clockwise to sufficiently to hold the fuse in place. 10/22/2021 10

Detonate the Charge. l l l Place a black leather field glove or similar type glove on either hand. Grasp barrel of M 81 with gloved hand. Remove safety pin. Grasp pull ring and push in then pull out to ignite fuse If fuse fails to ignite, push plunger all the way back in and pull out. If fuse still does not ignite replace igniter or light with a match. 10/22/2021 11

Note l If a M 81 is not available, the fuse can be lit by splitting the rear end of the fuse and placing the head of an unlit match in the powder train and lighting the match. 10/22/2021 12

Construct a Nonelectric Initiating/Detonating Assembly. l The basic materials consist of: M 11 Blasting Cap/Shock Tube, M 12 Transmission Line, M 81 igniter, M 9 Holder (if needed) and explosives. l The minimum safe distance, when in the open, is 300 meters for explosive which are between 1 and 27 pounds. 10/22/2021 13

Inspect M 11 Shock Tube Inspect fuse for cracks or loose powder. l Check blasting cap for dents, loose powder, and ensure cap is secured to fuse. l Inspect M 12 Transmission Line in the same manner as M 11. l l Note: The M 9 and M 12 holder can hold up to 5 shock tubes. 10/22/2021 14

Insert Blasting Cap on M 11 into C-4. Make a hole in C-4 large enough to accommodate the entire blasting cap using a stick or similar material. l Place blasting cap into hole of C-4. l Mold the C-4 around the fuse at the top of blasting cap. WARNING: ONLY APPLY ENOUGH PRESSURE TO MOLD THE C-4. l 10/22/2021 15

Insert Blasting Cap into TNT Use a sharp knife, razor blade, etc to cut 1/2 inch and metal seal from free end of M 14. WARNING: YOU SHOULD MAKE SURE YOU WEATHERPROOF THE CUT END OF THE M 14 IF THE CHARGE WILL REMAIN FOR ANY EXTENDED PERIOD OF TIME. l Pass the non blasting cap end of the M 14 through the slit in the priming adapter with the threads pointed towards the blasting cap. l 10/22/2021 16

Insert Blasting Cap into TNT Pull the cap into the adapter until the blasting cap is seated into the adapter. WARNING: DO NOT APPLY PRESSURE TO THE BLASTING CAP. l Place the blasting cap and adapter into the hole of the TNT. l Screw the adapter into the TNT. l you must also remove the “J” hook. WARNING: YOU SHOULD MAKE SURE YOU WEATHERPROOF THE CUT END OF THE M 11 IF THE CHARGE WILL REMAIN FOR ANY EXTENDED PERIOD OF TIME. l 10/22/2021 17

Connect M 11 Shock tube to M 12 Transmission line Place the M 12 Transmission Line blasting cap into flap end of M 12 holder, use an M 9 holder if M 12 holder is not present, and lock flap down. l Make a small loop on non blasting cap end of the M 11 Shock Tube. l Place loop into large flap end of M 12 or M 9 holder and lock down flap. M 12 and M 9 holders can hold up to 5 shock tubes. l 10/22/2021 18

l Unroll M 12 transmission line back to firing point 10/22/2021 19

Attach M 12 Transmission Line to M 81 Igniter l l l Turn the M 81 end cap 1/2 turn counterclockwise. Remove only the smaller shipping plug from the igniter. Use a sharp knife, razor blade, etc to cut 1/2 inch and metal seal from free end of M 12. Insert fresh cut end of fuse in the space created by removing the shipping plug. Insert free end of transmission line. Push and turn shock tube into igniter as far as it will go. Tighten cap sufficiently to hold the transmission line in place. 10/22/2021 20

Detonate the Charge Place a black leather field glove or similar type glove on either hand. l Grasp barrel of M 81 with gloved hand. l Remove safety pin. l Grasp pull ring and push in then pull out to ignite fuse. l 10/22/2021 21

Modernized Demolition Initiators Any Questions? 10/22/2021 22