<xs:simpleType name="MassPerVolumeUom">
  <xs:restriction base="eml:UomEnum">
    <xs:enumeration value="0.001 lbm/bbl">
      <xs:annotation>
        <xs:documentation>pound-mass per thousand barrel</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="0.001 lbm/gal[UK]">
      <xs:annotation>
        <xs:documentation>pound-mass per thousand UK gallon</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="0.001 lbm/gal[US]">
      <xs:annotation>
        <xs:documentation>pound-mass per thousand US gallon</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="0.01 grain/ft3">
      <xs:annotation>
        <xs:documentation>grain per hundred cubic foot</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="0.1 lbm/bbl">
      <xs:annotation>
        <xs:documentation>pound-mass per ten barrel</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="10 Mg/m3">
      <xs:annotation>
        <xs:documentation>ten thousand kilogram per cubic metre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="g/cm3">
      <xs:annotation>
        <xs:documentation>gram per cubic centimetre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="g/dm3">
      <xs:annotation>
        <xs:documentation>gram per cubic decimetre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="g/gal[UK]">
      <xs:annotation>
        <xs:documentation>gram per UK gallon</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="g/gal[US]">
      <xs:annotation>
        <xs:documentation>gram per US gallon</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="g/L">
      <xs:annotation>
        <xs:documentation>gram per litre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="g/m3">
      <xs:annotation>
        <xs:documentation>gram per cubic metre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="grain/ft3">
      <xs:annotation>
        <xs:documentation>grain per cubic foot</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="grain/gal[US]">
      <xs:annotation>
        <xs:documentation>grain per US gallon</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="kg/dm3">
      <xs:annotation>
        <xs:documentation>kilogram per cubic decimetre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="kg/L">
      <xs:annotation>
        <xs:documentation>kilogram per litre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="kg/m3">
      <xs:annotation>
        <xs:documentation>kilogram per cubic metre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="lbm/bbl">
      <xs:annotation>
        <xs:documentation>pound-mass per barrel</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="lbm/ft3">
      <xs:annotation>
        <xs:documentation>pound-mass per cubic foot</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="lbm/gal[UK]">
      <xs:annotation>
        <xs:documentation>pound-mass per UK gallon</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="lbm/gal[US]">
      <xs:annotation>
        <xs:documentation>pound-mass per US gallon</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="lbm/in3">
      <xs:annotation>
        <xs:documentation>pound-mass per cubic inch</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="mg/dm3">
      <xs:annotation>
        <xs:documentation>milligram per cubic decimetre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="mg/gal[US]">
      <xs:annotation>
        <xs:documentation>milligram per US gallon</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="mg/L">
      <xs:annotation>
        <xs:documentation>milligram per litre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="mg/m3">
      <xs:annotation>
        <xs:documentation>milligram per cubic metre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Mg/m3">
      <xs:annotation>
        <xs:documentation>megagram per cubic metre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="t/m3">
      <xs:annotation>
        <xs:documentation>tonne per cubic metre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="ug/cm3">
      <xs:annotation>
        <xs:documentation>microgram per cubic centimetre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>