"Working with the difficult subject of machinery in motion and under actual factory conditions. Bay State Film Productions, Inc., succeeded, with remarkable effectiveness, in producing a film of such simple clarity and orderly progression as to make it an excellent teaching medium. The picture, designed and executed to acquaint a company's salesmen with the background production steps to the things they sell, is lacking in none of the essential details that go to make it effective. The story is told by a general foundry superintendent in an easy, pleasing manner. Although of highly technical subject matter, the film arouses interest in average audiences as well as in the individuals handling the products made within Building 100 of the Chapman Valve Company of Indian Orchard, Mass., who commissioned the picture." Movie Makers, Dec. 1944, 495.