Mark Carter, a 61-year-old construction industry veteran whose position was not identified, was fatally struck at Florida site by a subcontractor dump truck on April 28.

In the wake of a rise in fatal trenching cave-ins, the federal Occupational Safety and Health Administration has begun a targeted education and enforcement program to try to reverse the trend.

A third worker died while on the job at the sprawling, 21-mile-long I-4 Ultimate in Orlando. Michael Tolman, 56, an ironworker with Shelby Erectors, a project subcontractor, died March 8 after being struck.

Massive blaze destroys Denver apartment building under construction on a tight urban site.