Valuing a Natural Resource Option

Description
The user has to input the following variables:
1. Present value of estimated reserves, net of royalties and marginal costs
2. Variance in the price of the natural resource
3. Present value of the cost of developing the natural resource
4. Riskless interest rate that corresponds to relinquishment period
5. Length of the relinquishment period on resource reserves
6. Expected annual after-tax cashflow from resource after it is developed.

Note: this model is being shared with the authorization of Professor Aswath Damodaran from NYU Stern Business School