Business screen magazine (1939-1940)

U.S.S.COR-TEN is the two-reel sound tiwtion picture sponsored by the United States Steel Corporation for showing 'S a sales presentation by the sponsor's representatives to steel buyers, company epresentalives and others interested in this advanced product. (Jam Handy.) ♦ Typical of straightforward technical presentations favored in the metals industry is the United States Steel Corporation's 1938 sound motion picture U. S. S. Cor-ten, a two-reel production largely devoted to the need and development of a new low allov high-tensile corro sion-resisting steel recently perfected. A strong, direct-selling presentation originally used in direct contacts with buyers and prospects, the picture nevertheless has sufficient educational value to be of interest to technical groups, engineering schools and other organizations. Other Metals Featured in Films ♦ The story of the production and uses of aluminum and aluminum products is depicted in two educational motion picture films produced in 1938. The films, of the silent type and containing two reels each, are entitled Aluminum, from Mine to Metal and .-iluminum : Fabrication Processes. They were added to the film library of the Bureau of Mines, which consists of approximately -l.OOO reels, shown on 102,637 occasions in 1937 for example, to an audience of over 10 million persons. The Story of Aluminum The first picture illustrates the use of aluminum in transportation, in the home, in building, and in industry. It shows the sources of bauxite, the mineral from which aluminum is extracted, and a series of scenes illustrate the methods of mining bauxite, and of crushing, washing, screening, and drying the ore. Other scenes picture the various processes used in converting the prepared ore into the powdery white chemical "alumina." which is then loaded into railroad cars and shipped to points where electricity is cheap. Animated drawings are used to show clearly the details of the electrolytic process in making aluminum metal in the form of concentration of the ores and in smelting and refining operations are depicted. Copper Mining in Arizona is the title of a film of three reels. This illustrates methods employed in starting open-pit mining at Morenci. Views are given of diamond drilling, air drilling and blasting operations and of the use of huge electric shovels in removing overburden. Operations are also depicted at Ajo. where a 20-year old pit is in its prime. Other scenes illustrate workings at Jerome, in an open-pit about 800 feet deep, which has produced -15 million tons of ore. Another series of scenes illustrates the extensive underground mining carried on at Bisbee and includes a trip through the tunnels of a large mine. A one-reel film is entitled Copper Leaching and Concentration. Leaching is illustrated by scenes covering solution of copper from the rock, the collection of copper iiigots read) for the fabrication of aluminum products. The second picture shows how the metal aluminum is worked and shaped into various forms, such as plates, sheets, foil, bars, rods, wire, and cable. Processes of rolling and annealing are depicted. Scenes in a blooming mill show rolling of the aluminum ingot preparatory to the manufacture of structural shapes. Next are shown the reduction of ingot to rod and the stranding of wire into cable. Animation is again used to illustrate the fabrication of alumiimm into useful shapes by hydraulic extrusion. Further scenes illustrate, by animation, the making of castings, and the working of wrought aluminum, by stamping, spinning, hammering, welding and other processes. The closing scenes illustrate research work in the laboratory and the many and varied uses of completed aluminum products. Copper Industry Films ♦ The story of the production of copper, one of the most widely-used metals, is interestingly revealed in four new educational motion picture films made in co-operation with one of the larger mining companies. The methods and processes employed in the mining, leaching and sulphate underground, and the precipitation of the copper in tanks containing scrap iron. Scenes illustrating concentration include crushing, screening, grinding in ball mills, separation of the copper minerals by flotation, recovery of water, disposal of tailings, collection of concentrates on suction filters, and shipment to the smelter. Another one-reeler bears the title. Copper Smelting, and shows the conversion of copper ore and concentrates into metallic copper. The operations depicted include: crushing and sampling of the ore; mixing with concentrates; roasting to remove some of the sulphur; melting in reverberatory furnaces where impurities such as silica, alumina, and iron form a slag, which is drawn off^ and hauled to the dump. Copper Refining is the title of another one-reel film. This shows conversion into chemically pure copper of the anode slabs made as shown in the film Copper Smelting. ALUMINUM is the featured product in tiuo notable .tlununum Company .America motion pictures. Shown above is a scene typical of i mining processes Uluslrated in the first film, ".4luminum, Mine to Metal" and (belo; the manufacturing scene is typical of the second and final reel, "Aluminum Fabricati Processes." The pictures are thoroughly technical and educational in aspect. They he been made available to technical groups, etc . Ihi,.,i<}h the Bureau of Mines. (Jam F!and_ Number Five 1940