(June 4, 2020, 8:09 AM EDT) -- CINCINNATI — Leaseholders in a royalty dispute with a hydraulic fracturing company on May 1 filed a notice of appeal in the Sixth Circuit U.S. Court of Appeals contesting a district court’s decision that granted summary judgment to the company regarding its use of the netback method for calculating royalties (Zehentbauer Family Land LP, et al. v. Chesapeake Exploration LLC, No. 20-3469, 6th Cir.)....