Princeton–Deepwater District
... that part of West Virginia's Princeton–Deepwater District railway was so steep that only shortened coal trains could ascend it?
... that part of West Virginia's <b id="mwB4w"><a href="./Princeton–Deepwater_District" id="mwB40" rel="mw:WikiLink" title="Princeton–Deepwater District">Princeton–Deepwater District</a></b> railway was so steep that only shortened coal trains could ascend it?