Texas Rare Earth Resources Corp. | 2013 | FY | 3


Mineral Exploration and Development Costs

All exploration expenditures are expensed as incurred. Costs of acquisition and option costs of mineral rights are capitalized upon acquisition. Mine development costs incurred to develop new ore deposits, to expand the capacity of mines, or to develop mine areas substantially in advance of current production are also capitalized once proven and probable reserves exist and the property is determined to be a commercially mineable property. Costs incurred to maintain current production or to maintain assets on a standby basis are charged to operations. If the Company does not continue with exploration after the completion of the feasibility study, the mineral rights will be expensed at that time. Costs of abandoned projects are charged to mining costs including related property and equipment costs. To determine if these costs are in excess of their recoverable amount, periodic evaluation of carrying value of capitalized costs and any related property and equipment costs are based upon expected future cash flows and/or estimated salvage value in accordance with ASC 360-10-35-15,  Impairment or Disposal of Long-Lived Assets. Exploration costs were approximately $1,282,000 and $7,633,000 for the years ended August 31, 2013 and 2012, respectively.

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