Bill Minarik<p>An eye-openning talk by Mette Bendixen (Geography, <a href="https://fosstodon.org/tags/McGillUniversity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>McGillUniversity</span></a> ) on artisanal extraction of sand and gravel for concrete in the developing world. <br>Back breaking work, low pay, environmentally destructive and controlled by powerful syndicates. <br>Below is from Rwanda.</p><p><a href="https://fosstodon.org/tags/sand" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sand</span></a> <a href="https://fosstodon.org/tags/aggregate" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>aggregate</span></a> <a href="https://fosstodon.org/tags/UrbanDevelopment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>UrbanDevelopment</span></a> <a href="https://fosstodon.org/tags/DevelopingNations" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DevelopingNations</span></a> <a href="https://fosstodon.org/tags/rivers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rivers</span></a></p>