EMPLOYEE STATES THAT ON 8/5/2021 THEY BEGAN HAVING ACHING IN THE LOWER BACK FROM WORKING IN THE LOW COAL SEAM . EE DESCRIBED THIS AS ""NORMAL"" FOR THEM. OVER THE NEXT FEW SHIFTS THE PAIN BECAME WORSE UNTIL THE EE SOUGHT MEDICAL ATTENTION ON 8/8/2021. EE WAS TREATED FOR A PULLED MUSCLE ON 8/9/2021.