BOB BECK: When a crude oil train derailed and exploded in downtown Lynchburg, Virginia this week, it wasn’t the first or even the second time that’s happened this year. As growing domestic production of oil strains pipeline capacity, railroads have been picking up the slack. Crude-by-rail, as it’s known, has grown 500 percent since 2011. But a recent string of accidents has led to concern about its safety. Wyoming Public Radio energy reporter Stephanie Joyce joins us now to talk about how those concerns are playing out in Wyoming, and what’s being done about them.