Gravel mine
Gravel mines, also called button mines, are small American-made air-dropped anti-personnel mines. They were used extensively during the Vietnam War as part of the McNamara Line.
Gravel mines, also called button mines, are small American-made air-dropped anti-personnel mines. They were used extensively during the Vietnam War as part of the McNamara Line.
Gravel mines, also called button mines, are small American-made air-dropped anti-personnel mines. They were used extensively during the Vietnam War as part of the McNamara Line.
Source: Wikipedia "Gravel mine" · CC BY-SA 4.0
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