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<!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" -->
<!-- Begin Block Tagged Note 4 - us-gaap:SegmentReportingDisclosureTextBlock-->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>4. Segments</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">Our operations are organized into three reportable segments: North American Gypsum, Building
Products Distribution and Worldwide Ceilings. Segment results were as follows:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="52%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6">Three Months </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6">Nine Months</td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: 1px solid #000000">ended September 30,</td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: 1px solid #000000">ended September 30,</td>
<td style="border-bottom: 1px solid #000000"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td nowrap="nowrap" align="left"><i>(millions)</i></td>
<td> </td>
<td nowrap="nowrap" align="right" colspan="2">2010</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right" colspan="2">2009</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right" colspan="2">2010</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right" colspan="2">2009</td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px"><i>Net Sales</i>:
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">North American Gypsum
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">413</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">443</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">1,265</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">1,363</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Building Products Distribution
</div></td>
<td> </td>
<td> </td>
<td align="right">281</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">329</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">811</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,019</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Worldwide Ceilings
</div></td>
<td> </td>
<td> </td>
<td align="right">174</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">173</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">511</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">517</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Eliminations
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(110</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(123</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(344</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(384</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Total
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">758</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">822</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">2,243</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">2,515</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px"><i>Operating Profit (Loss)</i>:
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">North American Gypsum
</div></td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(43</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(31</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(89</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(72</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Building Products Distribution
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(24</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(73</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(85</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(109</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Worldwide Ceilings
</div></td>
<td> </td>
<td> </td>
<td align="right">21</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">21</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">62</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">57</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Corporate
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(13</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(12</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(50</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(53</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Eliminations
</div></td>
<td> </td>
<td> </td>
<td align="right">1</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(3</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">3</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Total
</div></td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(58</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(92</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(165</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="left">$</td>
<td align="right">(174</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
<!-- PAGEBREAK -->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The total operating losses for the third quarter and first nine months of 2009 included
goodwill and other intangible asset impairment charges of $41 million related to Building Products
Distribution. Restructuring and long-lived asset impairment charges by segment were as follows:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="52%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6">Three Months </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6">Nine Months</td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: 1px solid #000000">ended September 30,</td>
<td style="border-bottom: 1px solid #000000"> </td>
<td style="border-bottom: 1px solid #000000"> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: 1px solid #000000">ended September 30,</td>
<td style="border-bottom: 1px solid #000000"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td nowrap="nowrap" align="left"><i>(millions)</i></td>
<td> </td>
<td nowrap="nowrap" align="right" colspan="2">2010</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right" colspan="2">2009</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right" colspan="2">2010</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right" colspan="2">2009</td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">North American Gypsum
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">30</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">11</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">40</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">24</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Building Products Distribution
</div></td>
<td> </td>
<td> </td>
<td align="right">5</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">8</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">14</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">14</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Worldwide Ceilings
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Corporate
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">10</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Total
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">35</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">22</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">54</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">51</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td colspan="17" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     See Note 3 for information related to restructuring and long-lived asset impairment
charges and the restructuring reserve as of September 30, 2010.
</div>
</div>
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<!-- Begin Block Tagged Note
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This element may be used to capture the complete disclosure of reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10% or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.
Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
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