Daz, did you follow the story of the P-38 Lightning they rescued from the ice in the Arctic?
They built a custom circular burner to drill a core shaft down to the plane and pumped out the melted water. One of the 1st things they brought up was a nose canon, which they clamped to a 55 gal. drum on the ice and test fired.
At least 10 years ago. The plane has since been fully restored and flown.
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