| http://www.w3.org/ns/prov#value | - I was employed to use it for, that was grinding soft sand stone off hard sands and well suck up nice white sands on beaches, but never rocky situations like a rocky riverbed, or most probably NOT Nome Beach, my line of thought when I posted that picture, was a scaled down attachment, for the SCALED DOWN bio-robot to handle heavy sticky clay bottoms like in New Zealand, Another point is I suggested
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