As of Sept. 30, 2011, Sprott held a major position:
http://www.sprott.com/Docs/FinancialReports/Quarterly_Summary/2011/September/Sep2011-QPD-Sprott-Canadian-Equity-Fund.pdf
On the Oct. 4th South Boulder investor presentation (on their website), Sprott is listed at 19% ownership.
Eric Sprott visited Australia a month or two ago and during a TV interview he mentioned that he was an investor in STB.
We should look into this further.