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RIDDELL V. MONOLITH PORTLAND CEMENT CO., 371 U. S. 537 (1963)
U.S. Supreme Court
Riddell v. Monolith Portland Cement Co., 371 U.S. 537 (1963)
Riddell v. Monolith Portland Cement Co.
Decided January 14, 1963
371 U.S. 537
The Internal Revenue Code of 1939 permitted taxpayers to deduct as a depletion allowance a percentage of "gross income from mining" and defined "mining" as including the "ordinary treatment processes normally applied by mine owners . . . to obtain the commercially marketable mineral product or products." During the taxable year 1952, respondent mined limestone from its own quarry, crushed it, transported the crushed product two miles to its plant, and there, through the addition of other materials and further processing, manufactured the limestone into cement, which it sold.
Held: Respondent's depletion allowance must be based not upon the value of the finished cement, but upon the value of the product of the "mining" when it reached the crushed limestone stage. United States v. Cannelton Sewer Pipe Co., 364 U. S. 76. Pp. 371 U. S. 537-539.
301 F.2d 488 reversed.
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