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Published January 12, 2013, 12:00 AM

Miners 100 years ago

Two miners continue working after a timber collapse at an unidentified iron mine in northern Minnesota between 1900 and 1910. The state mining safety law, written in 1905, still requires mines to keep “a sufficient and suitable supply of timber and logging on hand” to forestall cave-ins — even though all mining has been done in open pits for the past 50 years. (Iron Range Research Center photo)
Read the article: St. Louis County seeks to update century-old mining law