Liberty Oilfield Services Inc. (NYSE:LBRT) Q4 2018 Earnings Conference Call February 6, 2019 10:00 AM ET Company Participants Chris Wright - CEO Michael Stock - CFO Ron Gusek - President Conference Call Participants James West - Evercore ISI Sean Meakim - JPMorgan Jud Bailey - Wells Fargo George O'Leary - Tudor Pickering and Holt & Company Scott Gruber - Citigroup Connor Lynagh - Morgan Stanley Stephen Gengaro - Stifel Blake Gendron - Wolfe Research Marc Bianchi - Cowen Operator Good morning, and welcome to ...