Posted by Desperado on June 11, 2016 
Are those solar panels on the ballast cars?
Posted by Steve Larson on June 11, 2016 
Stunning! Love this pic, Kevin. Well shot. Thanks for sharing with us.
Posted by Kevin Morgan (ColoradoRailfan.com) on June 12, 2016 
@Desperado: Yes! The solar panels charge batteries on each car that, in turn, power the doors for dumping the ballast. In fact, each car has a GPS unit that can be programmed by the railroad. The result is that the cars will automatically dump ballast exactly where they are programmed to!
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