“By unintentionally substituting the wrong gas for one they intended to use for hardening tools, workers at a small metallurgical company have accidentally hit upon a potentially valueable method for coating objects with a hard diamond film.”
“To manufacturers…a securely bonded diamond coating that is able to extend the life of a drill or die or saw or axle by thousands of times would be worth its weight in gold. Such a coating may at last be within reach.”