This file photo shows a sand train near New Auburn. The frac sand industry has experienced a significant slowdown during the past year. An industry trade magazine will host a two-day conference next ...

In a clash of old and new industries, Wisconsin frac sand producers say their business is threatened by a handful of railroads operating under outdated regulations. Wisconsin produces about a third of ...

There's a rumor going around the energy industry that it's running low on frac sand. That sand is critically important, because it props open cracks in the rock so oil and natural gas can escape. If ...