Competitors work their bricks and mortar in the Spec Mix Bricklayer 500 during World of Concret …

Competitors work their bricks and mortar in the Spec Mix Bricklayer 500 during World of Concrete 2021 at the Las Vegas Convention Center on Wednesday, June 9, 2021, in Las Vegas. (L.E. Baskow/Las Vegas Review-Journal) @Left_Eye_Images