Ann: Hydrocarbon Samples from Mukuyu-2 Discovery at Laboratory, page-426

For a long-term contract price of USD 450/mscf, the expected value of helium at 1% concentration per Tscf is $A 3.45 per share (assuming 2 Bn shares).Applying a 37% discount factor and at 0.1% concentration, the expected price would be about 13c per share for each Tscf.

As an example, for a 10 Tscf find, the value of helium would be $A 1.28 per share if the helium concentration is 0.1%.In comparison, a 15 Tscf find at 0.5% helium content could mean the helium is worth close to $A 10 per share after applying the discount factor.We should alsomultiply by about 70% R.F. and 70% for license ownership, which results in $A4.70 per share.

Me:If the minimum concentration of helium for commerciality is 0.04%, then it would correspond to about 2.5c share price increase for each Tscf of gas. So, for a 20 Tscf find, the helium could be worth $A 0.50 per share based on 2 Bn shares, after applying the discount-factor, 70% RF and 70% ownership. If the helium concentration is 0.4% rather than 0.04%, then the share price might be increased by $A 5.00 per share due to the helium in Mukuyu if there is 20 Tscf gas.