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Title: Photograph of Edmund Longyear
Type: Photograph
Date: no date
Source: Minnesota Historical Society
Description: Edmund J. Longyear was a mining engineer on the Mesabi Range. He was the first prospector to bring diamond drill technology to the Iron Range. He created a successful business by doing drilling for other prospectors and by investing in real estate.
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Title: Letter From Longyear to His Uncle
Type: Letter
Date: May 24, 1890
Source: Minnesota Historical Society
Description: Longyear wrote this letter informing his uncle of his activities on the Mesaba Range.
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Title: Letter From a Potential Customer
Type: Letter
Date: July 1, 1901
Source: Minnesota Historical Society
Description: Prospectors on the Mesaba Range often asked Longyear to do some drilling for them. This is one of those requests.
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Title: Advertisement for the Town of Bovey
Type: Advertisement
Date: May 28, 1904
Source: Minnesota Historical Society
Description: Longyear's company got involved in trying to found a new mining town on the range. This ad encourages local citizens to invest in the new town and build homes there.
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Title: Log of the First Hole Drilled on the Mesabi
Type: Document
Date: 1889
Source: Minnesota Historical Society
Description: Longyear kept a log describing the drilling of the first hole on the Mesabi range. This log can show us the process of testing for ore and the amount of time that was needed.
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Title: Article on Diamond Drilling on the Mesabi
Type: Newspaper
Date: August 22, 1903
Source: Mesaba Ore
Description: This article appeared in a tenth anniversary edition of the Hibbing newspaper. It describes Longyear's work with diamond drills on the Mesabi Range and their impact.
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