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  <xsd:element abstract="true" id="hnrg_statement-statement-note-5-bank-debt-bank-debt-less-debt-issuance-costs-details" name="statement-statement-note-5-bank-debt-bank-debt-less-debt-issuance-costs-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hnrg_statement-statement-note-5-bank-debt-maximum-leverage-ratio-details" name="statement-statement-note-5-bank-debt-maximum-leverage-ratio-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hnrg_statement-statement-note-5-bank-debt-tables" name="statement-statement-note-5-bank-debt-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hnrg_statement-statement-note-6-accounts-payable-and-accrued-liabilities-accounts-payable-and-accrued-liabilities-details" name="statement-statement-note-6-accounts-payable-and-accrued-liabilities-accounts-payable-and-accrued-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hnrg_statement-statement-note-6-accounts-payable-and-accrued-liabilities-tables" name="statement-statement-note-6-accounts-payable-and-accrued-liabilities-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hnrg_statement-statement-note-9-stock-compensation-plans-rsu-activity-details" name="statement-statement-note-9-stock-compensation-plans-rsu-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hnrg_statement-statement-note-9-stock-compensation-plans-rsu-activity-details-parentheticals" name="statement-statement-note-9-stock-compensation-plans-rsu-activity-details-parentheticals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hnrg_statement-statement-note-9-stock-compensation-plans-tables" name="statement-statement-note-9-stock-compensation-plans-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hnrg_statement-statement-note-9-stock-compensation-plans-vesting-of-nonvested-rsu-grants-details" name="statement-statement-note-9-stock-compensation-plans-vesting-of-nonvested-rsu-grants-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hnrg_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>
