Scope and content Statements of investment and ownership; descriptions of construction costs, materials, and operations; reports, specifications, and instructions; safety manuals; plans for proposed plants; and designs, blueprints, and photographs relating to the Semet-Solvay Company, Solvay Process Company, Tennessee Products Corporation, Indiana Harbor Company plants, Carbonifera de Sabinas Rosita, Mexico, and other by-product coke oven plants. Material relating to other industrial processes, and...