It's all trucks not trains supporting ng development in the areas i am familiar with.
At first, it was trucks only in Pennsylvania.
But once things got going in Pennsylvania, the railroads began to transport proppants, pipe and other cargoes needed for development and they also began to transport natural gas liquids out to the refineries and other markets.
And since West Virginia does have an extensive rail network, it can be expected that the same will happen in West Virginia as did happen in Pennsylvania.
By the way, in North Dakota, railroads are heavily involved in moving oil out to refineries. Don't know about proppants and pipe cargoes inbound, but we can find out.