Just 150 shares. The news about the auditors was filed with the SEC as an 8-K last week. It's the top headline on the Yahoo news related to TNRK.
Also, note that the most recent earnings (ending December 2006) are unaudited. That's not unusual for a company of TNRK's size. However, their auditors were going to do a full-year review next quarter. So why resign now? Do they have too much business?