Workers on the site of Manic 5, dam of the Manicouagan-Outardes hydroelectric Complex - Quebec - Canada 1968
<a href="//commons.wikimedia.org/wiki/User:MarcJP46" title="User:MarcJP46">MarcJP46</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>