@D500 posted:My layout's ballast is Woodland Scenics Gray Blend Coarse, and it is rock. Probably limestone. Most of the ballast I see around here on the CSX is modeled after the Woodland Scenics product (bad joke alert). The CN (ex-GM&O) track work shows a warmer, tan-ish shade of stone. Of course, ballast sources vary. I do not know how much size variation RR's typically allow in their ballast specs. Must be a bit.
To quote myself - after I typed the above yesterday, I got to thinking about my ballast (I have been doing ballasting with WS Gray Blend just this week) - and I realized that the container does not seem heavy enough to be full of rock. So, I took a few grains and a small hammer and an anvil and started attempting to crush a few of the grains. Well, not rock. looked "woody". I'd say walnut shells is as good a guess as any.
I don't care - the stuff looks good and works well. Brennan's, though, it's not.
