Can mine drainage sediment by used as a pigment?

Yes, a pollution problem can, in some cases, be turned into a resource.

The sign was written with AMD sediments. Click for more on the use of AMD sediments as pigment.
 This formerly white t-shirt was "dyed" with AMD sediments. Click for more details.

Bucknell students & faculty staining "Yellow Boy" t-shirts


The "Yellow Boy" shirt, "dyed" with AMD sediments.
 In the first large-scale application that I am aware of, Hedin Environmental is processing iron oxides from mine drainage on a pilot scale for shipping to a pigment company. See more details at EnvironOxide.  
Here is the first vehicle that I'm aware of to be painted with raw iron hydroxides from AMD - my '82 VW Vanagon camper.

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