EMPLOYEE WAS REMOVING 6 FT. SECTIONS OF OLD TRACK RAIL FROM AN AREA OF THE HAULAGE THAT HAD BEEN REPAIRED. AS HE AND HIS BUDDY WERE WALKING FROM TRACK ENTRY INTO CROSSCUT, HE TRIPPED AND BEGAN TO FALL. HE STUCK HIS LEFT ARM OUT TO BREAK FALL AND HIS THUMB CONTACTED A METAL RAIL TIE CAUSING A LACERATION.