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A comment on Old coal mines can be underground food farms. Parent comment

Re:Old coal mines can be underground food farms by nine_k on Monday December 03, 2018 @09:24AM (#18588931)
A lot of things in a mine is made of wood.
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Re:Old coal mines can be underground food farms by fencepost on Monday December 03, 2018 @10:17AM (#18589365)
Even worse, a lot of things in a coal mine are made of coal or are covered in coal dust. Flammable powders can be ugly, particularly if they're floating.
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Re:Old coal mines can be underground food farms by Rodneyj on Monday December 03, 2018 @10:10AM (#18589318)
I don't think they are worried about wood. Coal dust
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