Permanent claim record · Munising, Michigan

The first practical highway snowplow was invented in Munising, in the Upper Peninsula, in 1922.

Verified\u00b7 1922-01-01
Raw value (vault-stripped) {"tags":["firsts","snowplow","inventions","upper-peninsula"],"text":"The first practical highway snowplow was invented in Munising, in the Upper Peninsula, in 1922.","as_of":"1922-01-01","category":"engineering"}
Predicatetrivia.fact
SubjectMunising, Michigan (place)
As of1922-01-01
StatusVerified
SourceMichigan Pop Culture, Game Shows & Trivia Content Mine — Perplexity Deep Research (March 2026) (trust 6.5/10)
Reference—
Document hashpending evidence-pack link
Provenance chain
Claim ID028b1e8d-f4f3-419f-9a1f-7deb72dc8324