The fate of the largest modern railroad expansion is now in the hands of a federal appeals court. A three-judge panel heard arguments today (WED) in St. Paul. The Dakota Minnesota and Eastern Railroad's 2-billion dollar expansion requires hundreds of miles of new and rehabilitated track. It's all part of a plan to haul coal from Wyoming through South Dakota and Minnesota. A federal board approved that plan early last year. But it remains highly controversial. And today (WED) opponents challenged the federal approval process. Minnesota Public Radio's Erin Galbally reports.