Abstract: Employee #1 was setting a 140-ton white space frame and trust assembly on top of a National Marine Mammal Facility covering 60,000 square ft. Employee #1 was standing on the wood platform 45 ft above ground level of Atlantic Giant 700-ton crane which was sitting on a barge with two part wire ropes 0.625 in. diameter. A pin broke on a 17.5 ton shackle, releasing the main bad block which swung into the area where the Employee #1 was standing on the wooden platform. Employee #1 was struck by the wire ropes attached to the 16-ton main bad block. He sustained numerous injuries: the back area of his body; two fractured vertebra in the neck; bruises to the left arm, eye, head and face. He was also in shock. Employee #1 received on the job training from his employer.