The Information below is from the Interpretation Report prepared by Steve Webster following an airbourne geophysical Survey commissioned by Consolidated Tin Mines Limited in October 2008.  

The Pinnacles Project airborne survey was undertaken over a reasonably broad rectangular area of 7.2km(east- west) by 9.2km(north-south), to explore  the Pinnacles sediment roof pendent, and also for extensions and repetitions of the roof pendent. The Pinnacles sediment roof pendent are intercalated basalt/limestone/siltstone units of the Chillagoe Formation, contained within an approximately rectangular 3 km (north-south) by 500 metre shape, and surrounded and underlain by granite.

CSD is exploring along the eastern edge of this roof pendent, at an area called the Wafer prospect. Comalco, in the early 1970s, completed exploration within the roof pendent and named 23 prospects. They identified ironstone occurrences, skarn alteration of the limestone lenses, enriched in fluorite and in tin (only a limited amount of tin assay was completed). The Wafer prospect is an area on which they continued to do some further limited work through the mid 1970s, highlighting a tabular shaped tin mineralised body, of potential 800 metres length by 200 metre depth body, of ironstone. The CSD current work has been drill testing this Wafer area with very encouraging tin assay results announced to date.

The eastern edge of the Pinnacles roof pendent, while defined by the magnetics, is a complex set of anomalies in the RTP image, of magnetic highs and lows.

The magnetic lows suggest some remanently magnetised rock within the ironstones along this eastern edge, and interpreted as possibly several generations of mineralisation. Comalco identified tin and copper mineralisation within the Wafer prospect that supports this interpretation. These magnetic features continue to the south and north from the CSD drilled section of the Wafer prospect and these features will be tested in upcoming drilling.

Complex magnetic features of similar magnetic high and lows occur to the east of the Pinnacles roof pendent (see figures above) in coherent shapes to suggest repeats of Wafer prospect type magnetic expression. These will be tested for Wafer prospect type tin mineralisation.