Table of Contents: A statement of policy; Laying a thousand miles of pipe line; Shower curtains of rayon materials; Oklahoma's game refuges; Modern tools that save time; Monson slate from the pine tree state; How slate is produced and some of its...
Table of Contents: National air tour; Production of slate for the builder's use; Holing through at Hagans; In the V ring at Camp Perry; DuPont plant facilities; New DuPont rayon plant at Waynesboro, Virginia; New upholstery fabrics are made of...
An old stone and slate farmhouse on the shore of Lake Hayes, in the South Island of New Zealand. Lake Hayes is one of the most beautiful of the South Island lakes and this views show some of the magnificent scenery. Photographed in autumn, the...
Caption: "Pure Coal is lighter--slate and bone are heavier than the agitated mixture of sand and water in the cone. The coal floats and is washed over the lip of the cone. Impurities sink and are trapped out through the bottom."
