<p><span class="h-card" translate="no"><a href="https://mastodon.social/@whitequark" class="u-url mention">@<span>whitequark</span></a></span> <span class="h-card" translate="no"><a href="https://monads.online/@kirin" class="u-url mention">@<span>kirin</span></a></span> Boeing for instance used to put depleted uranium as counterweights in airplane mechanisms because it was essentially free for them.</p>