We’ve reported on how cheap natural gas is revolutionizing the energy industry. It’s plentiful, thanks to the drilling technique known as fracking. Well, that’s also changing American manufacturing. Factories are turning to natural gas to replace oil and even biomass sources like woodchips. And here’s an example, a paper mill in East Millinocket, Maine. Clyde Coleman heads up engineering for Xpress Natural Gas, or XNG. The young company has just started trucking natural gas to customers in Maine from its compression station near the Canadian border. Ned Dwyer says the boiler conversion is scheduled to be completed in June.