RWM's first link will take you to a webpage of photos of a 1995 railfan tour of the Bethlehem Steel plant, right before it closed - so I suppose that's why the infamous steel mill paranoia about photos of the plant didn't seem to apply. That page has multiple photos of the car dumper, as well as the giant traveling 'ore bridges' that managed and handled the iron ore stockpile after the cars were unloaded. At least 1 of those ore bridges is still there - it's now an icon for and holds the sign for the new (opened Memorial Day weekend 2009) Sands casino.
I don't know [yet] if the car dumper is still there. It would have made a good thrill ride for the kids. 
Better yet - enclose the car's area with glass and put in a pair of giant styrofoam or foam rubber dice, and use it to 'throw' them every hour or so to determine a high-rolling 'lucky winner' !
Just FYI - There's a new book out titled Bethlehem Steel Railroading, by Nevin Sterling Yeakel. I haven't seen it yet, so I can't comment on it.
- Paul North.