In the WALLY WOOD EC STORIES ARTISTS EDITION, you can see faded Craftint tones indicating the clouds of dust. The Gemstone reprint re-creates the modeling with color, though the Craftint shading is barely retained. Lacking any original ECs in my collection, I'm curious how much of the Craftint can be seen in the original publication.
Wow, this is way over my head, and I've never seen the original ECs (I wasn't about to spend dollars when the "new stuff" was 12 cents), but the original art I've seen, and the original printed covers from the 1950s of the same art, leads me to think the craftint here was slight or not at all. Don't get me wrong, I loved all the craftint, zip-a-tone, etc. that Wally (and the Fleagles for that matter) used on his work, but historically, I see Wood going for a wispier look with "hoof clouds," just a few fine, curved lines and some color added later (Marie Severin?) I could be wrong, but I'm adding sn example to this post