Wrongful death — Workers’ compensation immunity — Intentional torts exception — Action against decedent’s employer and fellow employee arising out of accident occurring on jobsite when decedent was cleaning cement-mixing pug mill — Trial court properly found that workers’ compensation was exclusive remedy for claims against employer where record contained no evidence indicating that decedent was not aware of danger, but instead established that risk of injury from pug mill was readily apparent, particularly since decedent had worked in or around pug mill many times in the past — Trial court erred when it entered summary judgment in favor of fellow employee on plaintiffs’ gross negligence claim where evidence of record indicated that employee directed decedent into pug mill for cleaning and then later activated pug mill without utilizing any of the safety systems or the signal system normally utilized by pug mill workers or otherwise checking to see if decedent was still inside