TH&B USRA 40-ton DS Boxcar question

Bill Welch
 

I am well along on building a Westy kit of the above for the TH&B. I have good photos to guide me and from one I can tell these cars had an Ajax Brake Gear and Wheel but cannot tell if the brake step is wood or steel. Anyone here have notes on these cars that can help me please?

Thank you,
Bill Welch

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