Skip to main content

Upper Peninsula Regional Digitization Center

You've searched: All Collections

  • All fields: machines
(9 results)



Display: 20

    • Anchor pier

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • Work underway is preparing for the grouting process. Other piers visible in the background. Note the marine crane of the contractor. Most of these machines were named and were still steam powered in the mid 1950's
    • Machinery

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • Machines and materials at the anchor pier. Two floating cranes and one mobile crane atop the structure. This view of the north anchor pier shows what will eventually be a structure ten stories high.
    • Office staff

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • Office staff manned telephone switchboards, teletype machines, typewriters, two-way radios, and other equipment that sent and received communications, weather information, and schedule data for the bridge project.
    • Office staff

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • Office staff manned telephone switchboards, teletype machines, typewriters, two-way radios, and other equipment that sent and received communications, weather information, and schedule data for the bridge project.
    • Office staff

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • Office staff manned telephone switchboards, teletype machines, typewriters, two-way radios, and other equipment that sent and received communications, weather information, and schedule data for the bridge project.
    • Office staff

    • Mackinac Bridge (Mich) ; Bridges -- Design and construction
    • Office staff manned telephone switchboards, teletype machines, typewriters, two-way radios, and other equipment that sent and received communications, weather information, and schedule data for the bridge project.

QuickView

Display a larger image and more item information when the pointer pauses over a thumbnail
 

Layout options:

Select the collections to add or remove from your search
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
 
OK