The title (Dangers of Train Yards) reminds me of a story told by an acquaintance who worked in a yard many years ago. He said they would fuel the engines by inserting a hose and letting it run. It would take a long time to fill the tanks and so they would walk off to complete other tasks. They would return and more often than not, the tank would just be overflowing diesel into the ground. He didn't think they would ever be able to remediate rail yards because of the contamination.