McKenna Process Company
Plant formerly located in Joliet, Illinois - ca. 1920.
Image 15 - Cold rails ready for straightening and drilling
Cold rails ready for straightening and drilling - Overall
Image 15. After spacing and turning over, the rerolled 
rails
are cool enough to be moved on to the Finishing
Mill
to be cold-straightened, chipped and drilled.

Details scanned from the original print:

a. Ready for Straightening & Drilling - Overall
b. Detail

Note: The mechanical details are not quite apparent
here, but there had to have been a way to move the
rails seen in the foreground closer to the viewer as
the additional completed rails accumulated in the
background. One can see some of that mechanism
in the immediate foreground.
Cold rails ready for straightening and drilling - Detail
Detail