I missed the era when C30-7s rang dominant on many railroads. At least, I missed that era as far as photography goes. I still remember train chasing with my dad. I'd have to say that the C44-9W was the replacement for the C30-7, as far as its popularity goes, with railroads in the 1990s and early 2000s. While that era is also on its way out, you can still find plenty of "Crash-9s", as they are sometimes (unaffectionately) referred to, on BNSF trains.
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