Caine is arrested for stealing and is sent to a silver mine. Along the way, he teaches a fellow prisoner how to endure extreme heat and cold and how to survive in a serious cave-in.
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In the final scene a power transmission line can be seen on the mountain in the background as Caine walks away. See more
They've reached the second angle. That's where the track intersects.
Still 40 feet, maybe 45.
How long will that take?
Seven, maybe six and a half hours.
You said that we had enough air for - We only had enough air for four hours!