009. Workers from construction industry working on building. Workers working on construction site. Construction laborers wearing working uniforms and protective boots standing on the top floor, pulling big hose for concreting and during concrete pouring works. Concreting slab of steel reinforced concrete on modern buildings. Pouring concrete mix from cement mixer on concreting formwork and finished leveling the slab. Builders hold tools in the hands and working reinforced concrete. Concrete structure, iron wire surface, teamwork, hard work, heavy job, sunny day, outdoors. Tracking shot.