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This technical drawing depicts the detailed engineering specifications for a Mississippi River Anchor Barge Derrick Frame and its connections. The schematic includes multiple elevation views (A-A, B-B), sections (D-D, C-C, E-E), and detailed drawings of tackle hangers, leg developments, base plates, and maximum safe load specifications. The drawing provides precise measurements and structural details for a frame designed to handle a maximum load of 4 tons, with specific annotations for existing reinforcement, concrete embedding, and structural alignment. Key technical elements include tackle hanger guides, back and fore leg developments, and comprehensive dimensional specifications for the frame's critical components.