15-Second Delay Detonator M1

General: The 15-Second Delay Detonator M1 does not use the standard nipple, nor is it used with a blasting cap. It is used to obtain delay in firing demolition charges, parti-cularly during assault demolitions. It can be used to fire charges under water, since the case is waterproof.

Description: This detonator consists of an olive drab plastic case, a pull ring attach-ed to a coated pull wire, flash compound, and a powder-train delay tube with a detona-tor at the end.

Operation: When the safety pin is removed, a jerk on the pull ring draws the coated wire through the flash compound. The resultant flash ignites the powder-train delay, which sets off the detonator 15 seconds later.

Remarks: The pull ring should be jerked sharply. Once the pull ring has been jerked, there is no way to stop the detonator from exploding.

Figure 253. Delay Firing Device M1 (right) and
15-Second Delay Detonator M1 (left)