FLORENCE, Wisconsin — Workplace safety officials are investigating the death of a 16-year-old boy from injuries he received last week at a Wisconsin sawmill. Michael Schuls died Saturday at a pediatric hospital in Milwaukee, two days after officers responded to a call about an unresponsive teenager at Florence Hardwoods. His death comes as lawmakers in several states, including Wisconsin, are embracing legislation to let children work in more hazardous occupations, for more hours on school nights. The sheriff’s office said the teen died after an “industrial accident” but Chrisman said Thursday that Schuls’ cause of death and details of his injuries were not being released because of the ongoing investigation. …The Occupational Safety and Health Administration is investigating. …In Wisconsin, minors are prohibited from working in all logging-related occupations, including jobs involving the operation of sawmills, according to the Wisconsin Department of Workforce Development.