Summit Materials Inc. (NYSE:SUM) Q1 2020 Earnings Conference Call May 1, 2020 11:00 AM ET Company Participants Karli Anderson - Vice President Investor Relation Tom Hill - Chief Executive Officer Brian Harris - Chief Financial Officer Conference Call Participants Kathryn Thompson - Thompson Research Rohit Seth - SunTrust Trey Grooms - Stephens Jerry Revich - Goldman Sachs Phil Ng - Jefferies Stanley Elliott - Stifel Operator Ladies and gentlemen, thank you for standing by, and welcome to the Summit Material ...