![A-top-down-shot-of-a-concrete-mixer,-a-machine-screed,-and-trowelers-at-work-at-a-construction-site](https://v3.cdnpk.net/videvo_files/video/premium/partners0399/thumbnails/BB_15530d3d-9afa-44b6-9f3f-52b7e2e5b694_small.jpg)
A top down shot of a concrete mixer, a machine screed, and trowelers at work at a construction site
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