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re: What is that hugh mountain of white stuff off of Hwy 30 near St. Gabriel?
Posted on 6/7/15 at 5:38 pm to TigerTatorTots
Posted on 6/7/15 at 5:38 pm to TigerTatorTots
Phosphogypsum, its gypsum formed as a by-product of the production of fertilizer. People refer to them as Gypstacks.
1
Posted on 6/7/15 at 5:55 pm to MulveyTiger
quote:
Phosphogypsum, its gypsum formed as a by-product of the production of fertilizer. People refer to them as Gypstacks.
This is the correct answer. Normally, gypsum could be used in all kinds of construction products and you'd think the gypsum byproduct would go to that. However, due to the way the ore used to make fertilizer associates with other elements, it usually contains a VERY small amount of things like uranium and radium. So, the phosphogypsum usually ends up being very slightly radioactive. The radioactivity is above EPA limits for use in commercial products, so instead of being able to make construction materials out of it, they just pile it up and make gypstacks.
This post was edited on 6/7/15 at 6:01 pm
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