Altoona Test Plant, Interior View, 1973         
Here is an original photo that I took while exploring the former Pennsylvania Railroad Test Plant building in Altoona, Pennsylvania, during June of 1973. It seems that one of their labratories had a permanent hole in its floor for conducting various tests!
Date: 6/21/1973 Location: Altoona, PA Views: 122 Collection Of:   Thomas C. Ayers
Author:  Thomas C. Ayers
Altoona Test Plant, Interior View, 1973
Picture Categories: This picture is part of album:  PRR: "Testing Materials" ~ October 1911
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