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Bombardier CEO Resigns, Shares Plunge  MONTREAL (Reuters) - Paul Tellier resigned as president and  chief executive of train and plane maker Bombardier Inc.  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=BBDsvb.TO target=/stocks/quickinfo/fullquote"&gt;BBDsvb.TO&lt;/A&gt; &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=BBDb.TO target=/stocks/quickinfo/fullquote"&gt;BBDb.TO&lt;/A&gt;, a year before his contract was to  expire, the company said on Monday. 