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PyroDesu t1_j943lbx wrote

Reply to comment by seanbrockest in Was reading something related to Rock Salt mining. In places like the Himalayas where rock salt mining is done in cold temperatures, a lot of miners report burns. Why is it so that salt burns in a colder surroundings? Would it be the same reason why the salt ice challenge was so dangerous? by vvdmoneymuttornot

Most salt mines are dry, because salt is hygroscopic.

Apparently it makes ones which are no longer actively being mined very useful for preserving things like film, books, etc.

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seanbrockest t1_j945b43 wrote

Mostly true, but there are wet mines. My company used to have one on the East Coast of Canada that literally went out underneath the Atlantic Ocean. They were under the ocean!

The rock was very cool, so all humidity coming in on the fresh air formed as condensation on the walls, creating a wet mine.

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