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<div class="moz-cite-prefix">On 9/2/14 1:12 PM, Martin Koppenhoefer
wrote:<br>
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cite="mid:CABPTjTAmvBPGfTE+TUZ3wTUE9t-9ekddFc=b3DA3NtFbnU5RHw@mail.gmail.com"
type="cite">
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<div class="gmail_extra"><br>
<div class="gmail_quote">2014-09-02 17:46 GMT+02:00 Clifford
Snow <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:clifford@snowandsnow.us" target="_blank">clifford@snowandsnow.us</a>></span>:<br>
<blockquote class="gmail_quote">Then again if I made a
pontoon out of concrete, they'd just sink.</blockquote>
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<div class="gmail_extra">While I generally agree with your
agreement, this is not true, ships can be built out of
concrete (think aircraft carriers for instance), and German
universities even hold a regular competition who builds the
best canoe out of (fibre)cement: <a moz-do-not-send="true"
href="http://www.betonkanu-regatta.de/">http://www.betonkanu-regatta.de/</a><br>
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the British built two whole artificial harbors during WWII using
concrete pontoons:<br>
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<a class="moz-txt-link-freetext" href="http://en.wikipedia.org/wiki/Mulberry_harbour">http://en.wikipedia.org/wiki/Mulberry_harbour</a><br>
<br>
<a class="moz-txt-link-freetext" href="https://www.flickr.com/photos/nfgusedautoparts/sets/72157607171004437">https://www.flickr.com/photos/nfgusedautoparts/sets/72157607171004437</a><br>
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richard<br>
<pre class="moz-signature" cols="72">--
<a class="moz-txt-link-abbreviated" href="mailto:rwelty@averillpark.net">rwelty@averillpark.net</a>
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