operating mineral interest

For purposes of this section, the term “operating mineral interest” includes only an interest in respect of which the costs of production of the mineral are required to be taken into account by the taxpayer for purposes of computing the taxable income limitation provided for in section 613, or would be so required if the mine, well, or other natural deposit were in the production stage.


26 USC § 614(d)

Scoping language

For purposes of this section
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