Internal Revenue Service
Revenue Ruling
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smRev. Rul. 55-67
1955-1 C.B. 357
Caution: Revoked by Rev. Rul. 58-593
Full Text
Rev. Rul. 55-67
Gypsum, in its natural state, is a mineral which may occur in rocklike masses but is very soft and rarely mined or used as stone for ordinary commercial purposes. It is not to be classified as `stone,' as that term is used in section 114(b)(4)(A)(i) of the Internal Revenue Code of 1939 (as amended by section 319 of the Revenue Act of 1951) and section 39.23(m)-5(b) of Regulations 118, unless it is used, or sold for use, by the mine owner or operator as `stone' as defined in such regulations