071016002 Worker at BNSF Northtown CTC 35th track and signal project walks with detector device, presumably used for locating underground conduits.         
Date: 10/16/2007 Location: Minneapolis, MN Views: 155 Collection Of:   The Slidebroker image by John Hill
Author:  John Hill
071016002 Worker at BNSF Northtown CTC 35th track and signal project walks with detector device, presumably used for locating underground conduits.
Picture Categories: Signal,Track This picture is part of album:  2007 Various Twin Cities Trackwork Projects
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User Comments
Name Type Comments Date
Virgil Fitzpatrick General You are correct John. This sounder is either used to locate utilities or for tracking a directional boring machine 10/17/2007 6:55:22 PM

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