Operator Ladies and gentlemen, thank you for standing by and welcome to the Summit Materials Fourth Quarter 2020 Earnings Conference Call. At this time, all participants are in a listen-only mode. After the speakers' presentation, there will be a question-and-answer session. [Operator Instructions]. I would now like to hand the conference over to your speaker today, Karli Anderson. Thank you. Please go ahead. Karli Anderson -- Head of Investor Relations Welcome to Summit Materials fourth quarter and full year 2020 results conference call. We issued a press release yesterday afternoon, detailing our financial and operating results. This call is accompanied by our investor presentation and updated supplemental workbook, highlighting key financial and operating data, all of which are posted on the Investors section of our website.