EMPLOYEE WAS CLIMBING DOWN A LADDER FROM A WORK PLATFORM ON SHOVEL 015 AND FELT SOMETHING IN HIS LEFT EYE. HIS EYE WAS IRRIGATED BY SURFACE MINE RESCUE PERSONNEL. EYE FELT BETTER AND HE RETURN ED TO WORK FOR REMAINDER OF THE SHIFT. WHEN HE REPORTED TO WORK FOR NEXT SHIFT, HIS EYE WAS EXTREMELY REDDENED AND ALMOST SWOLLEN SHUT. E.R PHYSICIAN REMOVED EMBEDDED PARTICLE.