[4] With Len Evans, Tyrrell developed the Rothbury estate from the late 60s until their relationship ended in 1981.
[5] He was prominent in the development of the wine industry in the Hunter Valley of New South Wales, and for many years was regarded as the leading promoter and spokesperson for the wine industry there, popularizing Australian pinot noir and chardonnay.
[6] In November 1988, the Australian Wine and Brandy Corporation suspended his export licence following the discovery that Tyrrell's Vineyards wine contained excessive levels of sorbitol, a banned although non-toxic additive.
There were concerns this would be damaging to the Australian export market in light of the effects of similar scandals in Chernobyl and Austria.
[5] https://catalogue.nla.gov.au/Record/734664 an interview with Murray Tyrrell by Mel Platt This Australian biography article is a stub.