(May 6, 2020, 1:24 PM EDT) -- PITTSBURGH — A couple on May 4 filed a putative class action against a hydraulic fracturing company in Pennsylvania federal court contending that it owes them monetary damages for the underpayment of oil and gas royalties (Peter Brusamonti, et al. v. XTO Energy Inc., No. 20-652, W. D. Pa.)....