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Upper Peninsula Regional Digitization Center

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  • All fields: smooth
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    • Rocker bearings

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • These rocker bearings were located beneath trusses, between truss and pier to allow for smooth, wear free. movement of the steel as it expands and contracts due to heat and cold.
    • Rocker bearings

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • These rocker bearings were located beneath trusses, between truss and pier to allow for smooth, wear free. movement of the steel as it expands and contracts due to heat and cold.
    • Rocker bearings

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • These rocker bearings were located beneath trusses, between truss and pier to allow for smooth, wear free. movement of the steel as it expands and contracts due to heat and cold.
    • Interesting interview

    • Railroads ; Duluth, South Shore, and Atlantic Railway Company

    • Sources: The Mining Journal
      Marquette. Mi.
      November 27, 1886
      An Interesting Interview
      The following is taken from a lengthy interview, had with Mr. James McMillan by a reporter of the Detroit evening Journal. Upper Peninsula readers...

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