Citation: R v Piggott, Griffiths & Simeon [2002] NSWCCA 218
Court: NSW Court of Criminal Appeal
Date: 7 June 2002
Judge(s): Spigelman CJ, Barr J, Bergin J
Background
Three appellants were convicted in the District Court of knowingly taking part in the manufacture of not less than the commercial quantity of a prohibited drug, methcathinone, contrary to the Drug Misuse and Trafficking Act 1985. Two of the three appellants, Piggott and Simeon, were also convicted of supplying not less than the commercial quantity of the same drug.
The Crown case rested on events in June and July 1999. Police, executing a search warrant at a factory unit in Castle Hill, found chemical apparatus, laboratory glassware, recipes substantially derived from a Russian chemical abstract for the synthesis of methcathinone, and a quantity of chemicals. A covert video and audio recording captured all three men working in the factory unit on 1 July 1999, and two of them on 2 July 1999. When two of the appellants emerged from the factory on the evening of 2 July, police arrested them and found seven plastic bags containing approximately 979 grams of powder in the car.
The central question at trial was whether that powder was methcathinone. The Crown accepted that its case stood or fell on proof beyond reasonable doubt that the bags contained the prohibited drug, and that proof depended entirely on the reliability of the chemical analysis evidence.
Legal Issues
- Whether the verdicts of guilty were unreasonable or could not be supported having regard to the evidence, applying the test in M v The Queen (1994) 181 CLR 487
- Whether the jury could have been satisfied beyond reasonable doubt, on the evidence of the chemical analysts, that the powder in the bags was methcathinone
Decision
The Court identified three recognised testing methods for identifying an unknown substance: Gas Chromatography Mass Spectrometry (GCMS), Thin Layer Chromatography (TLC), and Infra-red Spectrography (IR). The Crown analyst, Mr Ballard, was the only witness who had tested the contents of the bags. His evidence was therefore critical. Two other analysts, Mr Murtagh for the Crown and Dr Kibby for the defence, gave evidence about methodology and the results.
Barr J, with whom Spigelman CJ and Bergin J agreed, found serious and compounding problems with Mr Ballard's evidence. Mr Ballard had initially identified the substance by visual comparison of a chromatogram alone, without mass spectrometric data, on 15 July 1999. His identification was based on an informal visual method rather than on the accepted standard of a library match. A further test on 24 August 1999 produced a retention time inconsistent with methcathinone, and Mr Ballard was found to have "interacted" with the GCMS testing process in a manner that undermined the integrity of that result. Subsequent retesting produced results that remained equivocal, with retention times and ion intensity ratios that fell outside acceptable tolerances.
The Court noted that the trial judge himself, in his sentencing remarks, had stated that had he been the finder of fact he would have rejected Mr Ballard's evidence and acquitted each accused on that ground alone. Barr J concluded that, having given appropriate weight to all evidence capable of supporting Mr Ballard's conclusion, a reasonable doubt about his identification should have remained. The Court therefore held that the verdicts were unreasonable and could not be supported having regard to the evidence.
Orders Made
- Each appeal upheld
- Each conviction quashed
- A verdict of acquittal entered for each appellant
Key Takeaways
- A conviction is unreasonable and cannot stand where, on a proper review of the whole of the evidence, it was not open to the jury to be satisfied beyond reasonable doubt of the critical factual element: M v The Queen (1994) 181 CLR 487 applies this standard.
- Where the Crown expressly accepts that its case depends entirely on proof of one specific fact, the reliability of the evidence going to that fact will be subject to intense appellate scrutiny.
- Identification of a prohibited drug by an analyst's informal visual comparison of a chromatogram, without accepted mass spectrometric library matching, was found here to be insufficient to sustain a verdict.
- Subsequent attempts to re-test and shore up a flawed primary analysis did not rescue the Crown's case where those tests themselves produced results with retention times and ion intensity ratios outside acceptable tolerances.
- Remarks made by a trial judge in sentencing, acknowledging that he personally would have rejected a key Crown witness and acquitted the accused, were treated by the Court of Criminal Appeal as fortifying its conclusion that reasonable doubt should have existed.
Legislation and Cases Referenced
Legislation
- Drug Misuse and Trafficking Act 1985 (NSW)
Cases
- M v The Queen (1994) 181 CLR 487