Episode 345

Ohio Using airplanes to photograph potential sites for mining. Special camera creates three-dimensional transparency from two negatives. Aerial Surveys, Inc., Cleveland, OH. Virginia Making wrinkle-resistant cotton cloth by impregnating it with special fluid. Columbia University professor develops a "Fabricometer" to measure wrinkles. Dan River Mills, Inc., Danville, VA. Pennsylvania Developing a door hinge that requires no mortising; construction industry. McKinney Manufacturing Co., Pittsburgh, PA. New York Dage Division of Thompson Products supplies television receivers and cameras to give fast information on seat availability on Pennsylvania Railroad. Pennsylvania Station, New York, NY.