Mining, coalmining workers, 1920s, exact location unknown, Germany, Europe

Factory building, steel industry, mechanical engineering, 1920s, Germany, Europe

"Construction workers laying a concrete floor or ceiling, """"Koelncubus"""" construction site, Cologne-Kalk, North Rhine-Westphalia, Germany, Europe"

"Reels of thread, Wuppertal, North Rhine-Westphalia, Germany, Europe"

"Construction site at night, Dusseldorf, North Rhine-Westphalia, Germany, Europe"

Group picture, construction workers, 1930s, exact location unknown, Germany, Europe

Construction industry, workers with boarding on top of a building site, Bonn, North Rhine-Westphalia, Germany, Europe, PublicGround, Europe

"Workbench for workers on building sites being suspended from a crane, anti-theft protection, Grevenbroich, North Rhine-Westphalia, Germany, Europe"

Factory building, steel industry, mechanical engineering, 1910s, Borsigwerke Berlin Tegel, Germany, Europe

"Construction site at night, Dusseldorf, North Rhine-Westphalia, Germany, Europe"

Construction workers processing reinforcing steel for reinforced concrete ceiling, Bavaria, Germany, Europe

"Construction workers drilling holes into concrete blocks during a building site load test at a construction site in Fridolfing, Bavaria, Germany, Europe"

Handicraft, workers in the textile industry, 1940s, Germany, Europe