Film about the glass industry. sheet of glass is produced in a factory from sand in a furnace. Man smooths the glass with a tool. Circular machines smooth the glass.Machines cut the strip and grind the glass. Results in plate glass. Men in factory lift plate glass off the conveyor belt. Pan down skyscraper. Man in a lift going down on the outside of a skyscraper. Exterior of Blenko Glass Company, Milton, West Virginia: hand made glass factory. Different tools in the glass factory. Glass being blown on a long pipe. Hand etching by craftsmen onto glass plates. Also use machine tools.