EE STATED THAT WHILE SETTING A NEW BEARING HOUSING ASSEMBLY INTO PLACE ON THE CONCRETE SAND SCREW, THE HOUSING SLIPPED/FELL 3-4 INCHES CRUSHING FINGER BETWEEN HOUSING AND ANGLE IRON FRAMEWORK ON REAR OF CONCRETE SAND SCREW RESULTING IN A LACERATION. EE WAS WEARING LEATHER WORK GLOVES AT TIME OF INCIDENT.