I believe the company is undervalued compared to other juniors...

I believe the company is undervalued compared to other juniors and mid-tier producers in similar base metal sectors.
Some very simple numbers:
Indicated Sn tonnes of 36,991 at US $30,000/t gives a value of metal in the ground of $1,109,730,000
Indicted and inferred of 77,872 at US $30,000/t gives a value of metal in the ground of $2,336,160,000

Its unlikely all inferred tonnes will be converted into measured, however, when you start mining you always seem to find additional mineralised and/or extensions to the orebody. Plus potential credits for Pb and Zn.
Of course you can't value an exploration (or per-mine) company based on purely dollar value of metal in the ground, however, 5% of the resource in a stable mining jurisdiction with no obvious red flags is about par. Sentiment and other external factors can push this up to 10%. Au (gold) would be the higher figure at the moment.
Anyway, in a purely analytical world I would suggest a fair Market Cap of US 115M.
With a weakening Aussie dollar this drives the Aussie valuation higher.
Of course they need to be able to sell the Tin into the market (which isn't a big market), but with projections of increased deficient, I think an off-take agreement wouldn't be too hard to negotiate.

Anyway, in summary, I feel the company is also undervalued!