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   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;In the second quarter of 2010, total income tax expense of $109&amp;#160;million includes a $5&amp;#160;million
   tax benefit on $56&amp;#160;million of costs associated with the BJ Services acquisition. Excluding the
   acquisition-related costs, our effective tax rate on operating profits in the second quarter of
   2010 is 44%, which is higher than the U.S. statutory income tax rate of 35% due to higher rates of
   tax on certain
   international operations primarily due to unbenefitted losses in some
   foreign jurisdictions, primarily in Africa,
   including a few that impose taxes on revenue (i.e. deemed profit
   taxes), and state income taxes. The effective tax rate in the second
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      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher SEC
 -Name Regulation S-X (SX)
 -Number 210
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 109
 -Paragraph 136, 172

Reference 3: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 109
 -Paragraph 43, 44, 45, 46, 47, 48, 49

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