American Institute of Mining Engineers inspect Hull-Rust mine, Hibbing, Minnesota
- American Institute of Mining Engineers inspect Hull-Rust mine, Hibbing, Minnesota
- Herbert Hoover headed a delegation of engineers visiting Hibbing and the Hull-Rust pit as a side trip of the national A.I.M.M. convention in Duluth.
- 1920-08-28
- 3646-102
- umn275997
- Funding provided to the Minnesota Digital Library through the Minnesota Arts and Cultural Heritage Fund, a component of the Minnesota Clean Water, Land and Legacy constitutional amendment, ratified by Minnesota voters in 2008.
- No Copyright - United States
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