Mealey's (December 19, 2018, 1:52 PM EST) -- PITTSBURGH — A drilling company involved in hydraulic fracturing operations on Dec. 19 moved in Pennsylvania federal court to file under seal confidential documents in its contract dispute with a fracking company contending that the documents in question include “sensitive and protected business information or expert reports that relied on this confidential information” (Orion Drilling Company LLC v. EQT Production Company, No. 16-01516, W.D. Pa.)....