EE was working with another EE replacing the oil into the outside trunion roller on the #9 kiln. EE's job was to fill a 5 gallon bucket with oil, then hand it to the other EE which would pour the oil into the kilns trunion roller. Another EE that had been operating crane, left the cranes pulley block, head high, allowing EE to make contact with the cranes pulley block.