A worker showing a scale model for a new chemical/industrial installation. The text board in front of the model explains: Smokestack dedusting utilizing flue gas - 烟囱除尘利用烟气.
In the publication Graphic art by workers in Shanghai, Yangchuan and Luta (Beijing: Foreign Languages Press, 1976) this image is published with the title "Splendid New Vista for Pollution Control".