Permanent claim record · Munising, Michigan
The first practical highway snowplow was invented in Munising, in the Upper Peninsula, in 1922.
| Predicate | trivia.fact |
|---|---|
| Subject | Munising, Michigan (place) |
| As of | 1922-01-01 |
| Status | Verified |
| Source | Michigan Pop Culture, Game Shows & Trivia Content Mine — Perplexity Deep Research (March 2026) (trust 6.5/10) |
| Reference | — |
| Document hash | pending evidence-pack link |
| Provenance chain | |
| Claim ID | 028b1e8d-f4f3-419f-9a1f-7deb72dc8324 |