(October 5, 2018, 2:35 PM EDT) -- DENVER — Attorneys for an environmental advocacy group and the U.S. Department of the Interior (DOI) presented oral arguments before the 10th Circuit U.S. Court of Appeals on Sept. 24 in which they debated whether the DOI followed federal law when it conducted the sale of leases for hydraulic fracturing (Southern Utah Wilderness Alliance, et al. v. U.S. Department of the Interior, et al., No. 17-4134, 10th Cir.)....