A major feature of the judgment is the level of detail the respondents gave about their discovery process. That detail mattered because the Court was being asked to decide whether further access to seized material was justified after discovery had already been undertaken.
For the EZ respondents, Ms Dunn gave unchallenged evidence that documents were searched from several sources, including directly from the EZ respondents and from the seized material. Once processed, there were approximately 3 million records in the seized material on which searches were run. The reasons describe a range of search methods. For some categories, searches were run for specific file names, folder names and MD5 checksums. For other categories, keyword searches were used. In some instances, searches were also directed to artefacts of access such as Jump Lists or Link Files. Lawyers at Gilbert + Tobin reviewed documents using Relativity, and Ms Dunn personally reviewed the documents to be produced by way of discovery.
The reasons also explain how particular discovery categories were approached. For example, searches were run for terms such as "ionic liquid", "molten salts", "eutectics", "electrowinning", "electrolyte" and related expressions for one category concerning research involving Ionic Liquid. For categories dealing with specific documents said to have been taken or copied, searches were tailored to the identified documents or to spreadsheets and reports already in evidence. For categories involving USB devices, searches were undertaken of the seized material and devices for documents listed in an independent computer expert's report. For categories involving technical documents, plant and process documents, laboratory books, due diligence material provided to Playground Global, expenditure on pilot or trial plants, and patents and patent applications, the reasons describe targeted searches and manual review steps.
Ms Dunn also gave evidence that searches were undertaken of documents in Mr Masterman's possession, including his personal devices, because he had not been a recipient of the search orders. She said the discovery exercise was large scale and required approximately 400 to 500 hours by Gilbert + Tobin in assisting the EZ respondents to comply with discovery obligations and respond to Fortescue's queries.
For Dr Winther-Jensen, Mr Hales gave evidence that 532,915 documents were searched using technology, 7,557 documents were then reviewed personally, Dr Winther-Jensen reviewed the proposed discovery, and 2,525 documents were produced for inspection. MinterEllison had spent approximately 360 hours on the discovery exercise up to inspection, plus about 90 additional hours responding to issues raised by Fortescue.
This level of procedural detail is the commercial heart of the decision. The Court was not dealing with a bare assertion that discovery had been done. It had evidence of a structured, resource-intensive search and review process across large volumes of material.