qc checking of newly laid asphalt on highway - cmannphoto stock pictures, royalty-free photos & images
{"Image ImageDescription": "Rising Sun, Maryland, USA - April 6, 2015:  American Infrastructure's Quality Control Personnel testing the density of the newly laid asphalt, with a Pavement Quality Indicator (PQI) Model 300 manufactured by TransTech Systems, as a steam roller operator waits for more instructions. These road repairs are along Route 274 East bound, about 3 miles outside of town.", "Image Copyright": "Charles Mann"}