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  <xsd:element abstract="true" id="ng_statement-statement-note-11-general-and-administrative-tables" name="statement-statement-note-11-general-and-administrative-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-12-other-income-expense-net-summary-of-other-income-expense-details" name="statement-statement-note-12-other-income-expense-net-summary-of-other-income-expense-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-12-other-income-expense-net-tables" name="statement-statement-note-12-other-income-expense-net-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-13-sharebased-compensation-other-information-related-to-stock-options-details" name="statement-statement-note-13-sharebased-compensation-other-information-related-to-stock-options-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-13-sharebased-compensation-performance-share-units-valuation-assumptions-details" name="statement-statement-note-13-sharebased-compensation-performance-share-units-valuation-assumptions-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-13-sharebased-compensation-psu-awards-outstanding-and-psu-activity-details" name="statement-statement-note-13-sharebased-compensation-psu-awards-outstanding-and-psu-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-13-sharebased-compensation-summary-of-sharebased-compensation-expense-details" name="statement-statement-note-13-sharebased-compensation-summary-of-sharebased-compensation-expense-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-13-sharebased-compensation-summary-of-stock-options-outstanding-details" name="statement-statement-note-13-sharebased-compensation-summary-of-stock-options-outstanding-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-13-sharebased-compensation-tables" name="statement-statement-note-13-sharebased-compensation-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-5-investment-in-donlin-gold-summary-of-the-companys-investment-in-donlin-gold-llc-details" name="statement-statement-note-5-investment-in-donlin-gold-summary-of-the-companys-investment-in-donlin-gold-llc-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-5-investment-in-donlin-gold-summary-of-the-companys-investment-in-donlin-gold-llc-details95E7655F-3403-4923-BDA6-07FFD8DA9F8C" name="statement-statement-note-5-investment-in-donlin-gold-summary-of-the-companys-investment-in-donlin-gold-llc-details95E7655F-3403-4923-BDA6-07FFD8DA9F8C" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-5-investment-in-donlin-gold-tables" name="statement-statement-note-5-investment-in-donlin-gold-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-6-other-assets-carrying-amounts-of-other-assets-details" name="statement-statement-note-6-other-assets-carrying-amounts-of-other-assets-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-6-other-assets-tables" name="statement-statement-note-6-other-assets-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-7-promissory-note-schedule-of-debt-details" name="statement-statement-note-7-promissory-note-schedule-of-debt-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-7-promissory-note-tables" name="statement-statement-note-7-promissory-note-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-8-other-liabilities-current-and-long-term-liabilities-details" name="statement-statement-note-8-other-liabilities-current-and-long-term-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-8-other-liabilities-tables" name="statement-statement-note-8-other-liabilities-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-9-equity-transactions-schedule-of-stockholders-equity-note-warrants-or-rights-details" name="statement-statement-note-9-equity-transactions-schedule-of-stockholders-equity-note-warrants-or-rights-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-note-9-equity-transactions-tables" name="statement-statement-note-9-equity-transactions-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="ng_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
