EU officials had hoped to persuade Russia to clean things up. But Morgan Bazilian, director of the Payne Institute for Public Policy at the Colorado School of Mines, said now that’s taking a back seat.

If these high coal prices last even a little bit longer, though, private equity firms might come calling, according to Ian Lange, director of the mineral energy economics program at the Colorado School of Mines.

Coal producers in the U.S. would like to take advantage of these high prices, but the infrastructure is just not there, according to Ian Lange, an economist at the Colorado School of Mines.

But at the Colorado School of Mines, policy professor Morgan Bazilian said unless rules have teeth and bring about change in the industry, hackers will return.