Five construction workers in full personal protective equipment are depicted in a confined industrial environment, likely a vertical shaft or tunnel under construction, in Aulnay-sous-Bois, France

Five construction workers in full personal protective equipment are depicted in a confined industrial environment, likely a vertical shaft or tunnel under construction, in Aulnay-sous-Bois, France. All individuals wear high-visibility orange and dark blue jackets with reflective stripes, hard hats (white, yellow, black, silver/grey), and black neck gaiters; some also wear ear protection muffs. They are clustered around a blue industrial hoist or access platform control unit. An individual on the far right is observed interacting with the control panel, which displays green indicator lights, a screen, and various buttons. A label on the machinery indicates a "CMU: 1000kg," signifying a maximum useful load of 1000 kilograms. The background reveals raw concrete walls, exposed metal structural elements, and a vertical mast likely associated with a lifting apparatus.