(December 10, 2018, 9:02 AM EST) -- COLUMBUS, Ohio — A group of mineral owners on Dec. 6 filed a putative class action against several hydraulic fracturing companies in Ohio federal court, contending that they are producing oil, natural gas and other hydrocarbon products from shale formations without agreements from the owners (J&R Passmore LLC, et al. v. Rice Drilling D LLC, et al., No. 18-1587, S.D. Ohio)....