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Larry's fourth article of Saturday morning
Author: Dick Seelye
Date: 09-07-2007 - 21:38

"BNSF TESTING NEW BRIDGE SAFETY DEVICE - - "

The electronic movement detection device is shown in a photograph, with a surveyor's transit behind it. Several of the readers of this newswire well remember optical transits. With care, they lasted forever. I first met them in 1949.

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  Larry's fourth article of Saturday morning Dick Seelye 09-07-2007 - 21:38
  Re: Larry's fourth article of Saturday morning Warren Smith 09-09-2007 - 13:46


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