Comstock Mining Inc. | 2013 | FY | 3


Mineral Rights and Properties - We defer acquisition costs until we determine the viability of the property. Since we do not have proven and probable reserves as defined by Securities and Exchange Commission (“SEC”) Industry Guide 7, exploration expenditures are expensed as incurred. We expense care and maintenance costs as incurred.
 
We review the carrying value of our mineral rights and properties for impairment whenever there are negative indicators of impairment. Our estimate of the gold price, mineralized materials, operating capital, and reclamation costs are subject to risks and uncertainties affecting the recoverability of our investment in the mineral claims and properties. Although we have made our best, most current estimate of these factors, it is possible that near term changes could adversely affect estimated net cash flows from our mineral claims and properties and possibly require future asset impairment write-downs.
 
Where estimates of future net operating cash flows are not available and where other conditions suggest impairment, we assess recoverability of carrying value from other means, including net cash flows generated by the sale of the asset. We use the units-of-production method to deplete the mineral rights and properties.

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