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No, there was no requirement for shields, but they were
occasionally applied. I have a shot of an overturned ATSF box car
with what appears to be a short piece of shielding over one wheel
of one truck.
On 12/12/2018 2:18 AM, Bob Chaparro
A Joe McMillan photo:
Caption: "A GN
Western Fruit Express reefer meets a firery end on a Santa
siding at Topock, Arizona, May 28, 1972. A westbound
train had set out the car a few minutes prior."
This was not the
result of a hotbox, as Joe explains: "No, the fire was not
caused by a hot box. These wooden cars had metal spark shields
attached to the underside of the body above the brake shoes.
Occasionally, these shields would fall off and sparks from the
brakes would lodge in the wooden under frame and cause a fire.
This car had traveled w/b down a long grade and its brakes had
been repeatedly applied."
Was there a
requirement for spark shields on cars with wood floors?