Ball mill &amp; stamp mill, gold ore processing centre, Shamva, Zimbabwe.<br>stamp_mill
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/86624586@N00">Kevin Walsh</a> from Oxford, England
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/86624586@N00/11199867">Flickr</a>