An employee was working on an overhead screen guard and leaning over to check jig alignment on the line. The employee had cut the welds loose on a check gig and held it up with a come-along to relocate it. The remaining single bead broke loose, causing the check gig to catch the employee's left-hand fingers against the column for the top of the check gig. The little finger was crushed and lacerated and the ring finger was partially amputated at the nailbed.