View From Top of Construction Trestle, Showing 58-Foot Gate, Pedro Miguel Locks, Panama Canal


Material Information

View From Top of Construction Trestle, Showing 58-Foot Gate, Pedro Miguel Locks, Panama Canal
Physical Description:
Angrick, Bill ( donor )
Keystone View Company
Place of Publication:
Meadville, PA
Copyright Date:


Subjects / Keywords:
Panama--Panama Canal   ( fast )
Locks (Hydraulic engineering)   ( fast )
Engineering   ( fast )
Machinery   ( fast )
Spatial Coverage:
Panama -- Central America -- Panama Canal Zone


A photo depicting the 58-foot gate of the Pedro Miguel locks, as well as the railways and machinery involved with the locks' construction.
Scope and Content:
B. L. Singley founded The Keystone View Company in 1892 in Meadville, Pennsylvania. The company quickly became the world's largest view company, having at least 250,000 negatives (of which some 50,000 were available as numbered views) by the 1930s. These images were meant to bring international experiences into the palm of the average person's hand, to be revisted in private or during social gatherings. It has been said that the ability of the stereograph to bring vicarious experiences to faraway people makes this medium parallel to the internet or television today. The Keystone View Company also focused on the educational value of their products, employing teams of people to write explanatory texts that were printed on the backs of the stereograph cards. This text, along with the imagery, presents the dominant vision of American ideals and interests during the late nineteenth and early twentieth centuries. Source 1: Source 2:
Gifted on behalf of William P. and Barbara L. Angrick

Record Information

Source Institution:
University of Florida
Holding Location:
Panama Canal Museum Collection at the University of Florida
Rights Management:
Public Domain Presumed (e.g. expiry of copyright term): This item is presumed to be in the public domain. The University of Florida George A. Smathers Libraries respect the intellectual property rights of others and do not claim any copyright interest in this item. Users of this work have responsibility for determining copyright status prior to reusing, publishing or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Resource Identifier:
accession number - 2013.2.131
System ID:

Full Text

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21709-View from Top of Construction Trestle, Showing 58-Foot Gate,
Pedro Miguel Locks, Panama Canal.

There is but one double lock at Pedro
Miguel. At each end of these Pedro Miguel
locks are mitering gates. These gates fit
together with their surfaces having a bevel
slope of 45 degrees. Altho the lift necessary
at the Pedro Miguel is a little over 30 feet,
the gate, as shown, is 58 feet high. The ex-
tra depth will be necessary to take care i
the pressure of the water and the displace-
ment of the vessels. Moreover the water
will be over 41 feet deep above the miter
It will take about fifteen minutes to empty
or fill a lock; quicker time would be apt to
cause troublesome currents in the locks or

approaches. Thirty minutes will be required
to pass a boat through a lock, and ten or
eleven hours will be necessary for passage
through the entire canal.
This picture shows also the concrete walls
in course of construction. In the distance
are to be seen hills showing the rolling na-
tui'e of thie isthmus at this point. For some
8 miles toward the Atlantic coast from Pe-
dro Miguel the country is quite hilly, and
here the canal has been dug through the
famous Culebra Cut. Throughout these 8
miles the channel has been narrowed down
to a width of 300 feet, whereas, in other
places, it runs from 500 to 1000 feet wide.

Copyright r1r2, by Keystone View Company.