Dryrock
From Handwiki Dryrock is the term used for processed phosphate rock, used in the production of agricultural fertilizer. Dryrock requires protection from the weather, and so is always shipped by rail using covered hopper and gondola cars.
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Categories: [Materials]
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☰ Source: https://handwiki.org/wiki/Chemistry:Dryrock | License: CC BY-SA 3.0
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