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Upper Peninsula Regional Digitization Center

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    • Suspender cables

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • The devices in this photo are suspender cable bands which, when secured to the main suspension cable, will hold the upper end of the suspender cables. This suspender cables will loop over the band and sit in a groove. It acts as an equalizer for...
    • Tower base

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • Workers screed and level the grout that will become the surface on which the tower base plate will sit. It must be flat and level to support and transfer the 6,500 ton of tower to the pedestal. The bolts support a ""roof"" to keep weather off the...
    • Tower base

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • Workers screed and level the grout that will become the surface on which the tower base plate will sit. It must be flat and level to support and transfer the 6,500 ton of tower to the pedestal. The bolts support a ""roof"" to keep weather off the...
    • Tower base

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • Workers screed and level the grout that will become the surface on which the tower base plate will sit. It must be flat and level to support and transfer the 6,500 ton of tower to the pedestal. The bolts support a ""roof"" to keep weather off the...
    • Gismo

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • Driving H-beams at an angle is a tough job. The ""gismo"" made this demanding job go quite well. These piles were driven to refusal at bedrock and gave the pier ""legs"" to stand on just as a chair has legs that allow it to sit on the floor.
    • There seems to be a good deal

    • Railroads ; Duluth, South Shore, and Atlantic Railway Company
    • Source: The Mining Journal
      Marquette, Mi.
      December 31, 1892 Saturday

      There seems to be a good deal of unnecessary newspaper talk going on regarding the sale of a controlling interest in teh MR to the DSS&A of to the havey...
    • Another English Encroachment

    • Railroads ; Duluth, South Shore, and Atlantic Railway Company
    • Source: Alger County Republican
      Au Train, Mi.
      July 28, 1888
      Saturday

      Another English Enroachment [*Encroachment]

      The sale of the DSS&A to the Canadian Pacific seems to be an assured fact. The interviews with the managers of...
    • Confidential

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

      Treasurer's Office

      New York, July 27, 1889

      W. A. C. Ewen
      Treasurer
      10 Wall St.

      Confidential

      E. W. Allen, Esq.
      Marquette, Michigan

      Dear Mr. Allen:

      I...
    • As Mr. E. V. Sedgwick's departure

    • Railroads ; Duluth, South Shore, and Atlantic Railway Company
    • Source: The Mining Journal
      Marquette, Mi.
      January 5, 1889

      As Mr. E. V. Sedgwick's departure from the city is drawing near his many friends here are desirous of obtaining some memento to remind them of his genial self and it occurs to...

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