7 of the 18 LTI¿s to date this year have resulted in injuries to hands and fingers.... The home made locking pin of the impact wrench made a very deep cut in the palm of his left hand damaging the nerve and tendon of the middle finger... His left hand fingers were caught between pulley and belt. The ring finger was amputated the little finger was crushed... The valve slipped from the Derrickman¿s hands and caught the Roustabout¿s hand as he tried to support it. His hand was permanently damaged... While fixing a hose clamp his middle finger tip was trapped by the quick-close handle. The tip of his finger was broken.