The Dayton region is again seeing a boost in construction workers. That’s the word from the Associated General Contractors of America. The Miami Valley had 11,800 construction jobs in January, up 300 jobs, or 3 percent, from January of 2017. A growing construction industry shows economic vitality as new buildings or renovations are signs of progress. The data combines construction, mining and logging jobs, though in Dayton construction is the dominant sector out of the three. Across the country,…