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| Japanese Explosive Ordnance – Bombs, Bomb Fuzes, Land Mines,
Grenades, Firing Devices and Sabotage Devices |
| Chapter 3 - Section 1 |
| Land Mines |
| Type JG - Antiboat Mine |
| Method of actuation: Chemical horn. |
| Weight of explosive: 22 pounds. |
| Type of explosive: HND/TNT 40/60 (type 98). |
| Diameter of top opening: 5.1 inches. |
| Diameter of top: 7 inches. |
| Mine No. | Diameter of base (inches) | Height (inches) |
Total weight (pounds) |
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| 1 | 14 5/16 | 10 1/4 | 57 | |
| 2 | 14 9/16 | 10 5/16 | 55 | |
| 3 | 14 9/16 | 10 5/16 | 62.5 | |
| 4 | 14 5/16 | 10 1/4 | 57 | |
| 5 | 14 5/16 | 10 1/4 | 52.5 |
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Description: There are five modifications of the subject mine, each of them being ac-tuated by a single chemical horn screwed into the top. The mines are either bell-shaped or of truncated cone shape with an additional distinguishing factor being the location of the welds. The firing mechanism is similar to the J-XIII; however, a very small detonator is used to initiate the explosive train. |
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Employment: Used as an antiboat mine for the protection of beaches and reefs; also on land as A/T mine by camouflaging. |
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Operation: The mine is laid with the chemical horn installed and a safety pin through the spring-loaded arming spindle. When positioned properly, the safety pin is removed allow-ing the spindle to move down and bridge the contacts of the safety switch. |
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The mine is fired when the chemical horn is crushed or broken. |
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Remarks: The Japanese designation for this mine is: Small type mine Model 2. |
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Figure 168 – Type JG Antiboat Mine. |
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