$xml = [xml]@"
<?xml version="1.0" encoding="utf-8" ?> 
<root> 
  <users job="salas"> 
    <user> 
      <name>Joe</name> 
      <age>17</age> 
    </user> 
    <user> 
      <name>Kate</name> 
      <age>12</age> 
    </user> 
  </users> 
  <users job="developer"> 
    <user> 
      <name>David</name> 
      <age>23</age> 
    </user> 
    <user> 
      <name>Eath</name> 
      <age>54</age> 
    </user> 
  </users> 
</root> 
"@
$users = $xml.SelectNodes("users")

$users
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