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925 |
Photo-Engravers | Workers in this unit group prepare metal plates by photogravure process for use in printing. Their functions include: performing all or several tasks in preparation of printing plates by photogravure process; photographing illustration and text material to obtain negatives; retouching negatives; reproducing material to be printed from negatives on metal plates; etching photo-printed plates with acid; retouching plates; performing related tasks. |
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