<xs:simpleType name="MassUom">
  <xs:restriction base="eml:UomEnum">
    <xs:enumeration value="ag">
      <xs:annotation>
        <xs:documentation>attogram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="cg">
      <xs:annotation>
        <xs:documentation>centigram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="ct">
      <xs:annotation>
        <xs:documentation>carat</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="cwt[UK]">
      <xs:annotation>
        <xs:documentation>UK hundredweight</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="cwt[US]">
      <xs:annotation>
        <xs:documentation>US hundredweight</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Eg">
      <xs:annotation>
        <xs:documentation>exagram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="fg">
      <xs:annotation>
        <xs:documentation>femtogram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="g">
      <xs:annotation>
        <xs:documentation>gram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Gg">
      <xs:annotation>
        <xs:documentation>gigagram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="grain">
      <xs:annotation>
        <xs:documentation>grain</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="hg">
      <xs:annotation>
        <xs:documentation>hectogram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="kg">
      <xs:annotation>
        <xs:documentation>kilogram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="klbm">
      <xs:annotation>
        <xs:documentation>thousand pound-mass</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="lbm">
      <xs:annotation>
        <xs:documentation>pound-mass</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="mg">
      <xs:annotation>
        <xs:documentation>milligram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Mg">
      <xs:annotation>
        <xs:documentation>megagram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="ng">
      <xs:annotation>
        <xs:documentation>nanogram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="ozm">
      <xs:annotation>
        <xs:documentation>ounce-mass</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="ozm[troy]">
      <xs:annotation>
        <xs:documentation>troy ounce-mass</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="pg">
      <xs:annotation>
        <xs:documentation>picogram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="sack[94lbm]">
      <xs:annotation>
        <xs:documentation>94 pound-mass sack</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="t">
      <xs:annotation>
        <xs:documentation>tonne</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Tg">
      <xs:annotation>
        <xs:documentation>teragram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="ton[UK]">
      <xs:annotation>
        <xs:documentation>UK ton-mass</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="ton[US]">
      <xs:annotation>
        <xs:documentation>US ton-mass</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="ug">
      <xs:annotation>
        <xs:documentation>microgram</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>