A MINER DRIVER HIT HIS HEAD WHILE GETTING INTO CAB OF MIXER TRUCK. HAD HIS HARD HAT ON & FORGOT TO DUCK WHEN GETTING IN CAB. TWEAKED NECK AS THE DAY PROGRESSED HIS NECK GOT STIFFER. HE SOUGHT CHIROPRACTIC MEDICAL ATTENTION ON THE 30TH DAY OF MAY AT THE END OF SHIFT.