A speculation-- they are meteorites and that Native Americans collected them for tool use, grinding grain or cutting

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Archimedes Plutonium

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May 13, 2026, 5:12:06 PM (14 hours ago) May 13
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Archimedes Plutonium

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5:43 AM (1 hour ago) 5:43 AM
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Now that ruler is deceptive for it says mm but the numbers are in centimeters. The manufacturer should have labeled the ruler as CM, not MM.
On Wednesday, May 13, 2026 at 4:12:06 PM UTC-5 Archimedes Plutonium wrote:
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