Abstract: At approximately 3:00 p.m. on July 18, 2019, an employee was working as a welder. The employee began working in a non-climate controlled metal building. The employee was working the fourth day of his four-day workweek. Sometime around 11 a.m. or 12 p.m. the employee began experiencing cramps. The employee drank water and took several breaks in the supervisor's air-conditioned container building to cool off. Sometime after 2:30 p.m., the employee's cramps became severe. A foreman transported the employee to the front office on a mule utility vehicle. Emergency medical services transported the employee to the hospital. The employee was hospitalized for two nights and then released.