Creating realistic loads for ExactRail’s Bethlehem’s hoppers has been a passion. We did not feel as though it was enough to design loads in a computer-generated environment. The curves and proportions of a coal load are nuanced; and we know what it should look like when correctly rendered. Unless we could hold it in our hand, look at in the car, and see it from all angles, we felt that we would be at risk of missing the mark in some subtle way. So, we struck a different path. For the loads of the Bethlehem hoppers, ExactRail created resin masters. These loads were carefully filed to shape by hand. When we felt like we had the perfect shape, we evaluated. Then, we refined. The next day, we would look at the project with fresh eyes, and we would refine again. After well over a week of revisions, we arrived at a place where amendments were the subtlest changes of curve and form. Not until then were we were absolutely confidant that the look and feel of heap load had been accurately captured.