I have so far modeled the first in the series, C.R. #3000, one of 75 steel rock cars. I plan to model at least 40 for revenue service, and a small part of the Copper Range mainline.
The beginings of a C.R. 2 bay rock hopper, it began its life as a Bowser PRR H22A 4 bay hopper and was be cut down to size. The project hint comes from the copperrange.org website

Begining, Bowser PRR H22A hopper.

Step 2, Chopped down, and assembled at correct size, then primered.

Starting on the black, HAND PAINTED...

Assebled with Kadee #58 couplers, and Kadee arch bar trucks.

Lettering & Numbering

All done by hand.

C.R. #3000