Illinois
La Salle, LaSalle County Illinois River and I and M Canal town
Tidal foreshore Source-confirmed findsGray area
What you could find
Reported finds from this ground.
Old bottles
Sea potteryAlso reported: Zinc-smelter slag from the Matthiessen and Hegeler works.
Photos via Wikimedia Commons: Sheila Sund (CC BY 2.0), NPS (Public domain).
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Why this spot
1880s+ Sanborn-mapped town on Illinois and Michigan Canal
Western terminus of the I and M Canal with heavy zinc industry; the canal corridor and smelter grounds are key targets, much of it public land.
Keep exploring nearby
More spots in this area.