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<p>[QUOTE=&quot;I Like Trees, post: 290410, member: 10463&quot;]<b>round with good reason</b></p><p><br /></p><p>It seems&nbsp; to me round has myriad advantages. No matter which way you rotate, only one way to stack.</p><p><br /></p><p>Each size only fits through one sized hole.</p><p><br /></p><p>Won&#039;t jam in things.</p><p><br /></p><p>Any of the same reasons for having round <a href="http://en.wikipedia.org/wiki/Manhole_cover#Why_are_they_generally_round.3F" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://en.wikipedia.org/wiki/Manhole_cover#Why_are_they_generally_round.3F" rel="nofollow">Manholes</a>.</p><p>(click for wikipedia article about manhole-roundness)</p><p><img src="http://upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Seville_manhole_cover_clipped.jpg/200px-Seville_manhole_cover_clipped.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>

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