backfill, last work done by hand 2

accident architecture asphalt backfill beware black blacktop broken businesses cable concrete construction contractors cracked curbs danger dangerous deep development digging dirty ditches employees engineering excavation gravel gutters hand hole improvements industries infrastructure jobs labor man men metro metropolitan people person place pothole projects repair road safety shovel shovels sidewalks sink sinkhole slide stones street techniques technology tool trenches underground uniform union walkways work worker workers workman yellow