On Jan. 16, Elway Gray, a 34-year-old pipe layer, entered a manhole in South Florida – a confined space – and quickly became unresponsive. Louis O’Keefe, a 49-year-old laborer, entered the manhole and attempted to rescue Gray. After O’Keefe also became unresponsive, Robert Wilson, a 24-year-old equipment operator, followed to help his fallen coworkers.