Liberty Oilfield Services, Inc. (NYSE:LBRT) Q1 2021 Earnings Conference Call April 28, 2021 10:00 AM ET Company Participants Chris Wright - CEO Michael Stock - CFO Ron Gusek - President Conference Call Participants Blake Gendron - Wolfe Research Scott Gruber - Citigroup George O'Leary - TPH & Company Stephen Gengaro - Stifel Nicolaus Chris Voie - Wells Fargo Ian Macpherson - Simmons Mike Sabella - Bank of America Waqar Syed - AltaCorp Capital John Daniel - Daniel Energy Frank Reppenhagen - Concentric Equity ...