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<!--Copyright (C) 2007-2009 XBRL US, Inc. All Rights Reserved.
Notice: Authorized Uses are Set Forth at http://xbrl.us/legal2009
  -->
<link:linkbase xmlns:link='http://www.xbrl.org/2003/linkbase' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd'>
<link:labelLink xlink:role='http://www.xbrl.org/2003/role/link' xlink:type='extended' xmlns:xlink='http://www.w3.org/1999/xlink'>
<link:loc xlink:href='mr-2009-01-31.xsd#mr_AuditCommitteeParagraph' xlink:label='loc_AuditCommitteeParagraph' xlink:type='locator' />
<link:label id='lab_AuditCommitteeParagraph_label_en-US' xlink:label='lab_AuditCommitteeParagraph' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Audit Committee Paragraph</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AuditCommitteeParagraph' xlink:to='lab_AuditCommitteeParagraph' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_AuditorInformationParagraph' xlink:label='loc_AuditorInformationParagraph' xlink:type='locator' />
<link:label id='lab_AuditorInformationParagraph_label_en-US' xlink:label='lab_AuditorInformationParagraph' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Auditor Information Paragraph</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_AuditorInformationParagraph' xlink:to='lab_AuditorInformationParagraph' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_DetailOfOfficerInformationTextBlock' xlink:label='loc_DetailOfOfficerInformationTextBlock' xlink:type='locator' />
<link:label id='lab_DetailOfOfficerInformationTextBlock_label_en-US' xlink:label='lab_DetailOfOfficerInformationTextBlock' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Detail of Officer Information [Text Block]</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_DetailOfOfficerInformationTextBlock' xlink:to='lab_DetailOfOfficerInformationTextBlock' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_InternalControlMonitoringAndMaintenanceParagraph' xlink:label='loc_InternalControlMonitoringAndMaintenanceParagraph' xlink:type='locator' />
<link:label id='lab_InternalControlMonitoringAndMaintenanceParagraph_label_en-US' xlink:label='lab_InternalControlMonitoringAndMaintenanceParagraph' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Internal Control Monitoring and Maintenance Paragraph</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_InternalControlMonitoringAndMaintenanceParagraph' xlink:to='lab_InternalControlMonitoringAndMaintenanceParagraph' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_InternalControlOverviewParagraph' xlink:label='loc_InternalControlOverviewParagraph' xlink:type='locator' />
<link:label id='lab_InternalControlOverviewParagraph_label_en-US' xlink:label='lab_InternalControlOverviewParagraph' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Internal Control Overview Paragraph</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_InternalControlOverviewParagraph' xlink:to='lab_InternalControlOverviewParagraph' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_OfficerDomain' xlink:label='loc_OfficerDomain' xlink:type='locator' />
<link:label id='lab_OfficerDomain_label_en-US' xlink:label='lab_OfficerDomain' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Officer [Domain]</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_OfficerDomain' xlink:to='lab_OfficerDomain' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_OfficerName' xlink:label='loc_OfficerName' xlink:type='locator' />
<link:label id='lab_OfficerName_label_en-US' xlink:label='lab_OfficerName' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Officer, Name</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_OfficerName' xlink:to='lab_OfficerName' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_OfficerSignature' xlink:label='loc_OfficerSignature' xlink:type='locator' />
<link:label id='lab_OfficerSignature_label_en-US' xlink:label='lab_OfficerSignature' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Officer, Signature</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_OfficerSignature' xlink:to='lab_OfficerSignature' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_OfficerTitleOrPosition' xlink:label='loc_OfficerTitleOrPosition' xlink:type='locator' />
<link:label id='lab_OfficerTitleOrPosition_label_en-US' xlink:label='lab_OfficerTitleOrPosition' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Officer, Title or Position</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_OfficerTitleOrPosition' xlink:to='lab_OfficerTitleOrPosition' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_OtherInformationParagraph' xlink:label='loc_OtherInformationParagraph' xlink:type='locator' />
<link:label id='lab_OtherInformationParagraph_label_en-US' xlink:label='lab_OtherInformationParagraph' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Other Information Paragraph</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_OtherInformationParagraph' xlink:to='lab_OtherInformationParagraph' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_ReportBodyManagementReport' xlink:label='loc_ReportBodyManagementReport' xlink:type='locator' />
<link:label id='lab_ReportBodyManagementReport_label_en-US' xlink:label='lab_ReportBodyManagementReport' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Report Body, Management Report</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ReportBodyManagementReport' xlink:to='lab_ReportBodyManagementReport' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_ReportInformation' xlink:label='loc_ReportInformation' xlink:type='locator' />
<link:label id='lab_ReportInformation_label_en-US' xlink:label='lab_ReportInformation' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Report Information</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ReportInformation' xlink:to='lab_ReportInformation' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_ResponsibilityParagraph' xlink:label='loc_ResponsibilityParagraph' xlink:type='locator' />
<link:label id='lab_ResponsibilityParagraph_label_en-US' xlink:label='lab_ResponsibilityParagraph' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Responsibility Paragraph</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ResponsibilityParagraph' xlink:to='lab_ResponsibilityParagraph' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_ManagementReportTextBlock' xlink:label='loc_ManagementReportTextBlock' xlink:type='locator' />
<link:label id='lab_ManagementReportTextBlock_label_en-US' xlink:label='lab_ManagementReportTextBlock' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Management Report [Text Block]</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_ManagementReportTextBlock' xlink:to='lab_ManagementReportTextBlock' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_TitleOfManagementReport' xlink:label='loc_TitleOfManagementReport' xlink:type='locator' />
<link:label id='lab_TitleOfManagementReport_label_en-US' xlink:label='lab_TitleOfManagementReport' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Title of Management Report</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_TitleOfManagementReport' xlink:to='lab_TitleOfManagementReport' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_OfficersTable' xlink:label='loc_OfficersTable' xlink:type='locator' />
<link:label id='lab_OfficersTable_label_en-US' xlink:label='lab_OfficersTable' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Officers [Table]</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_OfficersTable' xlink:to='lab_OfficersTable' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_OfficersOfficerAxis' xlink:label='loc_OfficersOfficerAxis' xlink:type='locator' />
<link:label id='lab_OfficersOfficerAxis_label_en-US' xlink:label='lab_OfficersOfficerAxis' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Officers, Officer [Axis]</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_OfficersOfficerAxis' xlink:to='lab_OfficersOfficerAxis' xlink:type='arc' />
<link:loc xlink:href='mr-2009-01-31.xsd#mr_OfficersLineItems' xlink:label='loc_OfficersLineItems' xlink:type='locator' />
<link:label id='lab_OfficersLineItems_label_en-US' xlink:label='lab_OfficersLineItems' xlink:role='http://www.xbrl.org/2003/role/label' xlink:type='resource' xml:lang='en-US'>Officers [Line Items]</link:label>
<link:labelArc order='1.0' xlink:arcrole='http://www.xbrl.org/2003/arcrole/concept-label' xlink:from='loc_OfficersLineItems' xlink:to='lab_OfficersLineItems' xlink:type='arc' />
</link:labelLink>
</link:linkbase>
