Can anyone provide a little history on RUSX 3 bay ribbed covered hoppers in the 483200-483500 number series? These were also produced in the Atlas Trainman line as a Thrall 4750. I've found several photos post 2000 and as late as 2017, but I am wondering if these could also fit in the mid to late 90's. I wasn't trackside until 2008 or so. Thanks