$75 dollars a barrel – that’s the price crude oil would have to hit for frackers in North Dakota’s Bakken fields to feel pressure to slow new production, according to Greg Zuckerman, author of “The Frackers” and a special reporter at the Wall Street Journal. “All these guys have hedged. They’ve got production [and] they’ve already got the acreage. They’re not gonna stop but maybe they’ll kind of slow new stuff.” Fracking in other parts of the country, though, is likely to be much more resilient. In Texas’s Eagle Ford and Permian basin, Zuckerman says oil prices would have to...