Employees were manually aligning 6"x6"x9' stainless steel beams weighing approximately 300 lbs on the tank stands. The injured employee and another employee were aligning beams in the same sequence on the same line. The supervisors were making the final adjustments when the employee attempted to help and his right little finger was pinched between the beam and the beam that was already in place. The employee was wearing gloves at the time of the incident. This resulted in a partial amputation of the little finger on the employee's right hand.