Investigators are looking into what kind of gases may have played a role at Prospect Valley Dairy in KeenesburgAn apparent accident at a dairy in a rural farming community in Colorado involving exposure to gas killed six people, including a high school student, authorities said Thursday.Investigators are looking into what kind of gases may have played a role in the deaths Wednesday at Prospect Valley Dairy in Keenesburg, about 35 miles (55km) north-east of Denver. Crews recovered the bodies in a confined space at the dairy, the Southeast Weld Fire Protection District said. Continue reading…