<?xml version="1.0" encoding="UTF-8"?>
<?oxygen RNGSchema="shared/cpf.rng" type="xml"?>
<eac-cpf xmlns="urn:isbn:1-931666-33-4" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:isbn:1-931666-33-4 http://eac.staatsbibliothek-berlin.de/schema/cpf.xsd">
<control>
<recordId>A001342</recordId>
<maintenanceStatus>revised</maintenanceStatus>
<maintenanceAgency>
<agencyCode>AU-VU:EOAS</agencyCode>
<agencyName>Encyclopedia of Australian Science and Innovation</agencyName>
<descriptiveNote>
<p><h4>All key entry types: Awards; Concepts; Corporate Bodies (Organisations); Cultural Artefacts; People; etc</h4> 

These key entries are listed separately below with other indexes and lists.</p>
</descriptiveNote>
</maintenanceAgency>
<languageDeclaration>
<language languageCode="eng">English</language>
<script scriptCode="Latn">Latin</script>
</languageDeclaration>
<conventionDeclaration>
<abbreviation>AACR2</abbreviation>
<citation>Anglo-American Cataloguing Rules</citation>
</conventionDeclaration>
<localControl localType="typeOfEntity">
<term>Corporate Body</term>
</localControl>
<maintenanceHistory>
<maintenanceEvent>
<eventType>created</eventType>
<eventDateTime standardDateTime="2001-08-24">2001-08-24</eventDateTime>
<agentType>human</agentType>
<agent>Ailie Smith</agent>
<eventDescription></eventDescription>
</maintenanceEvent>
<maintenanceEvent>
<eventType>updated</eventType>
<eventDateTime standardDateTime="2025-11-05">2025-11-05</eventDateTime>
<agentType>human</agentType>
<agent></agent>
<eventDescription></eventDescription>
</maintenanceEvent>
</maintenanceHistory>
</control>
<cpfDescription>
<identity><entityId>https://www.eoas.info/biogs/A001342b.htm</entityId>
<entityType>corporateBody</entityType>
<nameEntry><part>Plessey Australia Pty Ltd</part>
<authorizedForm>AACR2</authorizedForm>
</nameEntry>
</identity>
<description><existDates>
<dateRange>
<fromDate standardDate="1939-01-01">c. 1939</fromDate>
</dateRange>
</existDates>
<places>
<place>
<placeRole>Start Place</placeRole>
<placeEntry>Meadowbank, New South Wales, Australia</placeEntry>
</place>
<place>
<placeRole>Location</placeRole>
<placeEntry>Meadowbank, New South Wales</placeEntry>
</place>
</places>
<functions>
<function>
<term>Manufacturing Industry</term>
</function>
<function>
<term>Defence Industries</term>
</function>
<function>
<term>Communications</term>
</function>
</functions>
<biogHist>
<abstract>Plessey Australia Pty Ltd worked with the Wood Technology Division of the Forestry Commission of New South Wales to produce the 'Computermatic' machine stress grader which became widely used in Australia and overseas. Over the years they broadened their area of expertise and went on to investigate reception of high quality aerial reconnaissance pictures and ship-board sonar system. Plessey Australia Pty Ltd was eventually taken over by GEC Marconi Systems, a subsidiary of GEC Marconi (UK) and continues to produce piezoelectric ceramics, mainly for military use such as in underwater acoustic detection devices.</abstract>

</biogHist>
</description>
<relations><cpfRelation cpfRelationType="identity" xlink:type="simple" xlink:href="https://nla.gov.au/nla.party-1477216">
<relationEntry></relationEntry>
<descriptiveNote><p>Trove</p>
</descriptiveNote>
</cpfRelation>
<resourceRelation resourceRelationType="subjectOf">
<relationEntry localType="published">'Plessey Australia Pty Ltd', in <span style="font-style:italic">Encyclopedia of Australian Science and Innovation</span>, Centre for Transformative Innovation, Swinburne University of Technology</relationEntry>

<objectXMLWrap>
<bibref xmlns="urn:isbn:1-931666-22-9">
<title render="italic">Plessey Australia Pty Ltd</title>
<imprint>
<publisher>Swinburne University of Technology, Centre for Transformative Innovation</publisher>
</imprint>
<bibseries>
<title render="italic">Encyclopedia of Australian Science and Innovation</title>
</bibseries>
<extptr linktype="simple" href="https://www.eoas.info/biogs/A001342b.htm"></extptr>
</bibref>
</objectXMLWrap>
</resourceRelation>
<resourceRelation resourceRelationType="other" xlink:type="simple" xlink:href="https://www.eoas.info/bib/ASBS00016.htm">
<relationEntry localType="published">Resource: Technology in Australia 1788-1988</relationEntry>

<objectXMLWrap>
<bibref xmlns="urn:isbn:1-931666-22-9">
<name type="author">Academy of Technological Sciences and Engineering</name>
<title render="italic">Technology in Australia 1788-1988</title>
<edition>Online</edition>
<imprint>
<place>Melbourne</place>
<publisher>Australian Science and Technology Heritage Centre</publisher>
<date>2000</date>
</imprint>
<extptr linktype="simple" href="http://www.austehc.unimelb.edu.au/tia/"></extptr>
</bibref>
</objectXMLWrap>

</resourceRelation>
</relations>
</cpfDescription>
</eac-cpf>