Steel mill. Charging the open hearth, Pittsburgh, Pa., 1951. Photographed with flash powder. Note that this picture (taken in 1951) is fading. The yellow layer has faded, and if yellow were added in copying it, it would look like it did originally. A magazine article described the production of this photograph, in which d'Arazien consulted Roy Stryker: he used 15 21-in. satin-finished reflectors holding four bulbs each, plus six 2-ounce flash-powder charges, triggered from one central 110-volt box. 20 men helped d'Arazien's assistant John Bacchus handle the lighting. The camera was an 8" x 10" Deardorff with a 10-inch Ektar f/6.3 lens. With Daylight Type Ektachrome film, d'Arazien calculated an exposure at f/16. Apparently two exposures were made.