Mealey's (December 6, 2018, 12:53 PM EST) -- PITTSBURGH — A drilling company involved in hydraulic fracturing operations on Dec. 5 filed a brief in Pennsylvania federal court arguing that a fracking company with which it is engaged in a contract dispute should not be permitted to exclude evidence regarding employee morale that may have affected the decision to terminate the contract in question (Orion Drilling Company LLC v. EQT Production Company, No. 16-01516, W.D. Pa.)....