EE was pushing a wheelbarrow full of cement dust. Was wearing all PPE including safety glasses. Turned wheelbarrow over to dump dust into bobcat, dust came up and entered his left eye. Taken to first aid office where washed eye and placed eye drops into eye, same procedure at 2:30pm on 6/9/11. EE came into off with his eye swelled, red and almost shut, doc appt was made.