Sure, wait until AFTER I had scanned and geo-rectified my own paper map to release a high quality PDF and GIS layer of the bedrock geology of western Wisconsin...
Seriously though, this is great stuff! Check out the other maps the Wisconsin Geologic and Natural History Survey has recently made available. I'm drooling all over my keyboard. I suspect there have been a lot of questions to the survey about silica sand as an economic resource. I think it's great that the survey has provided the public with this kind of information.
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