[Code of Federal Regulations]
[Title 26, Volume 7]
[Revised as of April 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 26CFR1.614-2]

[Page 470-476]
 
                       TITLE 26--INTERNAL REVENUE
 
    CHAPTER I--INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY 
                               (CONTINUED)
 
PART 1_INCOME TAXES--Table of Contents
 
Sec. 1.614-2  Election to aggregate separate operating mineral interests 
under section 614(b) prior to its amendment by Revenue Act of 1964.

    (a) General rule. (1) The provisions of this section relate to the 
election, under section 614(b) prior to its amendment by section 226(a) 
of the Revenue Act of 1964, to aggregate separate operating mineral 
interests, and, unless otherwise indicated, all references in this 
section to section 614(b) or any paragraph or subparagraph thereof are 
references to section 614(b) or a paragraph or subparagraph thereof as 
it existed prior to such amendment. Notwithstanding the preceding 
sentence, the definitions contained in paragraphs (b) and (c) of this 
section shall apply both before and after such amendment. All references 
in this section to section 614(d) are references to section 614(d) as it 
existed prior to its amendment by section 226(b)(3) of the Revenue Act 
of 1964.
    (2) A taxpayer who owns two or more separate operating mineral 
interests, which constitute part or all of an operating unit, may elect 
under section 614(b) and this section to form one aggregation of any two 
or more of such operating mineral interests and to treat such 
aggregation as one property. Any operating mineral interest which the 
taxpayer does not elect to include within the aggregation within the 
time prescribed in paragraph (d) of this section shall be treated as a 
separate property. The aggregation of separate properties which results 
from exercising the election shall be considered as one property for all 
purposes of subtitle A of the Code. The preceding sentence does not 
preclude the use of more than one account under a single method of 
computing depreciation or the use of more than one method of computing 
depreciation under section 167, if otherwise proper. Any reasonable and 
consistently applied method or methods of computing depreciation of the 
improvements made with respect to the separate properties aggregated may 
be continued in accordance with section 167 and the regulations 
thereunder. Operating interests in different minerals which comprise 
part or all of the same operating unit may be included in the 
aggregation. It is not necessary for purposes of the aggregation that 
the separate operating mineral interests be included in a single tract 
or parcel of land or in contiguous tracts or parcels of land so long as 
such interests are a part of the same operating unit. Under section 
614(b), a taxpayer cannot elect to form more than one aggregation of 
separate operating mineral interests within one operating unit. For 
definitions of operating mineral interest and operating unit see 
respectively paragraphs (b) and (c) of this section.
    (b) Operating mineral interest defined. The term operating mineral 
interest means a separate mineral interest as described in section 
614(a), in respect of which the costs of production are required to be 
taken into account by the taxpayer for purposes of computing the 
limitation of 50 percent of the taxable income from the property in 
determining the deduction for percentage depletion computed under 
section 613, or such costs would be so required to be taken into account 
if the mine, well, or other natural deposit were in the production 
stage. The term does not include royalty interests or similar interests, 
such as production payments or net profits interests. For the purpose of 
determining whether a mineral interest is an operating mineral interest, 
costs of production do not include intangible drilling and development 
costs, exploration expenditures under section 615, or development 
expenditures under section 616. Taxes, such as production taxes, payable 
by holders of nonoperating interests are not considered costs of 
production for this purpose. A taxpayer may not aggregate operating 
mineral interests and nonoperating mineral interests such as royalty 
interests.
    (c) Operating unit defined. (1) The term operating unit refers to 
the operating mineral interests which are operated together for the 
purpose of producing minerals. An operating unit of a

[[Page 471]]

particular taxpayer must be determined on the basis of his own 
operations. It is recognized that operating units may not be uniform in 
the various natural resources industries or in any one of the natural 
resources industries, such as coal, oil and gas, and the like. As to a 
particular taxpayer, business reasons may require the formation of 
operating units that vary in size and content. The term operating unit 
refers to a producing unit, and not to an administrative or sales 
organization. Among the factors which indicate that mineral interests 
are operated together as a unit are:
    (i) Common field or operating personnel,
    (ii) Common supply and maintenance facilities,
    (iii) Common processing or treatment plants, and
    (iv) Common storage facilities.

However, operating mineral interests which are geographically widespread 
may not be treated as parts of the same operating unit merely because a 
single set of accounting records, a single executive organization, or a 
single sales force is maintained by the taxpayer with respect to such 
interests, or merely because the products of such interests are 
processed at the same treatment plant.
    (2) If aggregated, an undeveloped operating mineral interest shall 
be aggregated only with those interests with which it will be operated 
as a unit when it reaches the production stage.
    (3) While a taxpayer may operate an operating mineral interest 
through an agent, a coowner may aggregate only his operating mineral 
interests that are actually operated as a unit. For example, if A owned 
and actually operated the entire working interest in lease X and also 
owned an undivided fraction of lease Y in which B owned the remaining 
interest and which B actually operated as a unit with lease Z, A may not 
aggregate his interest in lease X with his undivided interest in lease 
Y, since they are not actually operated as a unit.
    (4) The determination of the taxpayer as to what constitutes an 
operating unit is to be accepted unless there is a clear and convincing 
basis for a change in such determination.
    (d) Manner and scope of election-- (1) Election; when made. (i) 
Except as provided in subparagraph (2)(ii) of this paragraph, the 
election under section 614(b) and paragraph (a) of this section to treat 
an mineral interest as part of an aggregation shall be made not later 
than the time prescribed by law for filing the taxpayer's income tax 
return (including extensions thereof), for whichever of the following 
taxable years is the later:
    (a) The first taxable year beginning after December 31, 1953, and 
ending after August 16, 1954, or
    (b) The first taxable year in which any expenditure for exploration, 
development, or operation in respect of the separate operating mineral 
interest is made by the taxpayer after the acquisition of such interest.

See, however, paragraph (c) of Sec. 1.614-6 as to the binding effect of 
an election where the basis of a separate operating mineral interest in 
the hands of the taxpayer is determined by reference to the basis in the 
hands of a transferor. The election under section 614(b) may not be made 
with respect to any taxable year beginning after December 31, 1957, 
except in the case of oil and gas wells. See paragraph (e) of this 
section for rules with respect to the termination of the election under 
section 614(b) except in the case of oil and gas wells. If an 
expenditure has been made in respect of a separate operating mineral 
interest, it is immaterial whether or not any proven deposit has been 
discovered with respect to such interest when such expenditure has been 
made. The provisions of this subdivision may be illustrated by the 
following example:

    Example. Taxpayer A is producing from an oil and gas horizon and in 
1958 he drills for the purpose of locating a deeper horizon which will 
be operated in the same operating unit as the upper producing horizon. 
At the end of the taxable year 1958 he has expended $50,000 drilling for 
the purpose of locating a deeper horizon although at such time there is 
no assurance that such a horizon will be found. If taxpayer A desires to 
aggregate the deeper horizon, if found, with the upper horizon under 
section 614(b), he must elect to do so in his return for 1958. If the 
election to aggregate the upper and lower horizons as one property is 
made, the drilling expenditures with respect to the prospective lower 
horizon

[[Page 472]]

must be taken into account along with the income and expenses with 
respect to the upper producing horizon in computing the depletion 
allowance on the aggregated property.


However, where expenditures for development of, or production from, a 
particular mineral deposit result in the discovery of another mineral 
deposit, the election with respect to such other deposit shall be made 
for the taxable year in which it is discovered and not for the taxable 
year in which the expenditures were first made which resulted in such 
discovery.
    (ii) Except in the case of oil and gas wells, if a taxpayer fails to 
make an election under section 614(b) to aggregate a particular 
operating mineral interest on or before the time prescribed for the 
making of such election, such interest will be treated as if an election 
had been made under section 614(b) to treat it as a separate property 
and it cannot be included in any aggregation within the operating unit 
of which it is a part unless the taxpayer obtains the consent of the 
Commissioner. However, where the taxpayer owns more than one property 
within an operating unit, but has elected to treat such properties 
separately and one or more additional operating mineral interests are 
subsequently acquired, any one or more of the latter may be aggregated 
with one of the existing separate properties within the operating unit 
but not with more than one of them since they cannot be validly 
aggregated with each other.
    (iii) In the case of oil and gas wells, if the taxpayer fails to 
make an election under section 614(b) with respect to a particular 
operating mineral interest on or before the time prescribed for the 
making of such election, the taxpayer shall be deemed to have treated 
such interest under the provisions of section 614(d). See section 614(d) 
and Sec. 1.614-4.
    (iv) For purposes of section 614(b), the acquisition of an option to 
acquire an economic interest in minerals in place does not constitute 
the acquisition of a mineral interest. Thus, a taxpayer who makes 
expenditures for the exploration of minerals on a particular tract under 
an option to acquire an economic interest in minerals in place is not 
required to make an election with respect to such interest at that time. 
Furthermore, the election need not be made in the taxable year in which 
payments are made for the acquisition of a lease, such as the payment of 
a bonus, unless exploratory, development, or operation expenditures are 
made thereafter with respect to the property in that year.
    (2) Election; how made. (i) The election under section 614(b) must 
be made by a statement attached to the income tax return of the taxpayer 
for the first taxable year for which the election is made. This 
statement shall indicate that the taxpayer is making an aggregation of 
separate operating mineral interests within an operating unit under 
section 614(b) and shall contain a description of the aggregation and 
describe the operating mineral interests within the operating unit which 
are to be treated as separate properties apart from the aggregation. A 
general description, accompanied by maps appropriately marked, which 
accurately circumscribes the scope of the aggregation and identifies the 
properties which are to be treated separately will be sufficient. The 
statement shall also contain a description of the operating unit in 
sufficient detail to show that the aggregated operating mineral 
interests are properly within a single operating unit. See paragraph (c) 
of this section. The taxpayer shall maintain adequate records and maps 
in support of the above information. In the event expenditures are first 
made on an operating mineral interest within an operating unit after an 
election with respect to the aggregation of interests in that operating 
unit has been made, the taxpayer shall furnish only information 
describing such operating mineral interest, its location in the 
operating unit, and whether it is to be included within the aggregation.
    (ii) If the taxpayer made or did not make the election under section 
614(b) with respect to a particular operating mineral interest and the 
last day prescribed by law for filing the return (including extensions 
of time therefor) on which the election was required to be made falls on 
or before May 1, 1961, consent is hereby given to the taxpayer to make 
or change the election not

[[Page 473]]

later than May 1, 1961. Any such election or change of such election 
shall be effective with respect to the earliest taxable year to which 
the election is applicable in respect of which assessment of a 
deficiency or credit or refund of an overpayment, as the case may be, 
resulting from such election or change is not prevented by any law or 
rule of law on the date such election or change is made. An election or 
change of election made pursuant to this subdivision shall be binding 
upon the taxpayer for the first taxable year for which it is effective 
and for all subsequent taxable years unless consent to a different 
treatment is obtained from the Commissioner. (See, however, paragraph 
(e) of this section for rules relating to the termination and 
nonapplicability of the election under section 614(b) except in the case 
of oil and gas wells.) Such election or change shall be made in the form 
of a statement setting forth the nature of the election or change, 
including information substantially the same as that required by 
subdivision (i) of this subparagraph, and shall be accompanied by an 
amended return or returns if necessary or, if appropriate, a claim for 
refund or credit. The appropriate documents must be filed on or before 
May 1, 1961 with the district director for the district in which the 
original return was filed.
    (3) Election; when effective. If a taxpayer has elected to aggregate 
an operating mineral interest, the date on which the aggregation becomes 
effective is the earliest date within the taxable year affected, on 
which the taxpayer incurred any expenditure for exploration, 
development, or operation of such interest. The application of this rule 
may be illustrated by the following examples:

    Example 1. In 1953, a taxpayer owned and operated mineral interests 
Nos. 1, 2, and 3. All three interests form one operating unit. The 
taxpayer, who files his return on a calendar year basis, continued to 
own and operate these interests during the year 1954, and in his return 
for that year, filed on April 15, 1955, elected to aggregate these three 
interests. As the result of this election, the aggregation was effective 
for all purposes of subtitle A of the Code as of January 1, 1954.
    Example 2. Assume that, on March 1, 1955, the taxpayer described in 
example 1 acquired operating mineral interest No. 4 which was also a 
part of the operating unit composed of operating mineral interests Nos. 
1, 2, and 3, that he made his first expenditure for exploration with 
respect to operating mineral interest No. 4 on September 1, 1955, and 
that, in his return filed on April 15, 1956, he elected to aggregate 
operating mineral interest No. 4 with the aggregation consisting of Nos. 
1, 2, and 3. As the result of that election, operating mineral interest 
No. 4 became a part of the aggregation for all purposes of subtitle of 
the Code on September 1, 1955.

    (4) Election; binding effect. A valid election made under section 
614(b) and this section shall be binding upon the taxpayer for the 
taxable year for which made and all subsequent taxable years unless 
consent to make a change is obtained from the Commissioner. However, see 
paragraph (e) of this section for rules with respect to the termination 
of the election under section 614(b) except in the case of oil and gas 
wells. For rules relating to the binding effect of an election where the 
basis of a separate or an aggregated property in the hands of the 
transferee is determined by reference to the basis in the hands of the 
transferor, see paragraph (c) of Sec. 1.614-6. A taxpayer can neither 
include within the aggregation a separate operating mineral interest 
which he had previously elected to treat separately, nor exclude from 
the aggregation a separate operating mineral interest previously 
included therein unless consent to do so is obtained from the 
Commissioner. A change in tax consequences alone is not sufficient to 
obtain consent to change the treatment of an operating mineral interest. 
However, consent may be appropriate where, for example, there has been a 
substantial change in the taxpayer's operations so that a major part of 
an aggregation becomes a part of another operating unit. Applications 
for consent shall be made in writing to the Commissioner of Internal 
Revenue, Washington, DC 20224. The application must be accompanied by a 
statement indicating the reason or reasons for the change and furnishing 
the information required under subdivision (i) of subparagraph (2) of 
this paragraph, unless such information has been previously filed and is 
current.
    (5) Invalid aggregations--(i) In general. In addition to 
aggregations which are invalid under section 614(b) because of

[[Page 474]]

the failure to make timely elections, aggregations may be invalid under 
such section in situations which may be divided into two general 
categories. The first category involves basic aggregations which were 
timely but otherwise initially invalid. The second category involves 
invalid additions of operating mineral interests to basic aggregations 
which additions became subject to the election in years subsequent to 
the year in which the initial basic aggregation or aggregations were 
formed.
    (ii) Invalid basic aggregations. The term invalid basic aggregations 
refers to those aggregations which are initially invalid. Generally, 
such basic aggregations will be invalid because more than one 
aggregation has been formed within an operating unit or because 
operating mineral interests in two or more operating units have been 
improperly aggregated. For any year in which an invalid basic 
aggregation exists, each operating mineral interest included in such 
aggregation shall be treated for all purposes as a separate property 
unless consent is obtained from the Commissioner to treat any such 
interest in a different manner. Consent will be granted in appropriate 
cases as, for example, where the taxpayer demonstrates that he 
inadvertently formed an invalid basic aggregation. The provisions of 
this subdivision may be illustrated by the following examples:

    Example 1. In 1953, taxpayer A owned six operating mineral 
interests, designated No. 1 through No. 6, and he continued to own and 
operate such interests during 1954. He acquired no other operating 
mineral interests during such year. All six of these operating mineral 
interests form one operating unit. Assume that A elected under section 
614(b) to aggregate operating mineral interests Nos. 1 through 3 into 
one aggregation and Nos. 4 through 6 into another aggregation. Since A 
has formed two aggregations in one operating unit, they are invalid 
basic aggregations. Therefore, interests Nos. 1 through 6 must be 
treated as separate properties for 1954 and all subsequent taxable years 
unless consent is obtained from the Commissioner to treat any of such 
interests in a different manner.
    Example 2. Assume the same facts as in example 1 and assume also 
that, in his return for 1954, A correctly elected to aggregate all six 
operating mineral interests into one aggregation under section 614(b). 
Assume further that all these operating mineral interests continued to 
be in one operating unit for the years 1954, 1955, and 1956 but that, 
because of changes in the facts and circumstances of A's operations, in 
1957 operating mineral interests Nos. 1, 2, and 3 became a part of one 
operating unit and Nos. 4, 5, and 6 became a part of another operating 
unit. Notwithstanding the change in operations, the election made by A 
shall continue to be binding unless consent to change such election is 
obtained from the Commissioner.

    (iii) Invalid additions. The term additions refers to the additions 
that a taxpayer makes by electing to aggregate an operating mineral 
interest with an aggregation formed in a previous year. Such additions 
will be invalid where the taxpayer either elected to aggregate an 
operating mineral interest with an invalid basic aggregation or elected 
to aggregate an operating mineral interest which is part of one 
operating unit with an aggregation of operating mineral interests which 
is a part of another operating unit. An operating mineral interest which 
is invalidly added to either a valid basic aggregation or to an invalid 
basic aggregation shall be considered as a separate property unless 
consent is obtained from the Commissioner to treat such interest in a 
different manner. The following are examples of invalid additions:

    Example 1. In 1953, taxpayer A owned six operating mineral interests 
designated No. 1 through No. 6 and he continued to own and operate such 
interests during 1954. He acquired no other operating mineral interests 
during that year. Nos. 1 through 3 formed one operating unit and Nos. 4 
through 6 formed another operating unit. In his return for 1954, A 
incorrectly elected to aggregate all six operating mineral interests 
into one aggregation under section 614(b). In 1955, A acquired and 
commenced development of operating mineral interest No. 7 which is 
correctly a part of the operating unit of which operating mineral 
interests Nos. 1, 2, and 3 are a part. A elected under section 614(b), 
for the year 1955, to aggregate operating mineral interest No. 7 with 
the invalid basic aggregation composed of Nos. 1 through 6. Since 
operating mineral interest No. 7 was aggregated with an invalid basic 
aggregation, it is an invalid addition and must be treated as a separate 
property unless consent is obtained from the Commissioner to treat it in 
a different manner.
    Example 2. In 1953, taxpayer A owned nine operating mineral 
interests designated No. 1

[[Page 475]]

through No. 9. During 1954, he continued to own and operate such 
interests and acquired no other operating mineral interest. Interests 
No. 1 through No. 3 form one operating unit, Nos. 4 through 6 form 
another operating unit, and Nos. 7 through 9 form a third operating 
unit. For the year 1954, A elected under section 614(b) to aggregate 
operating mineral interests Nos. 1, 2, 3, and 4 into one aggregation, to 
treat Nos. 5 and 6 as separate properties, and to aggregate Nos. 7, 8, 
and 9 into another aggregation. Assume that in 1955 A acquired and 
commenced development of operating mineral interest No. 10 which was a 
part of the operating unit composed of Nos. 1, 2, and 3. Assume further 
that he elected under section 614(b) to aggregate No. 10 with the 
aggregation composed of Nos. 7, 8, and 9. This would be an invalid 
addition to a valid basic aggregation since operating mineral interest 
No. 10 was not properly a part of the operating unit formed by Nos. 7, 
8, and 9. Therefore, interest No. 10 must be treated as a separate 
property for 1955 and all subsequent taxable years unless consent is 
obtained from the Commissioner to treat it in a different manner. 
However, the valid basic aggregation composed of interests Nos. 7 
through 9 is not affected by the invalid addition of interest No. 10.
    Example 3. Assume the same facts as in example 2 except that A 
elected under section 614(b) in 1955 to aggregate No. 10 with the 
aggregation of Nos. 1 through 4. This would also be an invalid addition 
because the aggregation composed of Nos. 1 through 4 is an invalid basic 
aggregation since operating mineral interest No. 4 is not a part of the 
operating unit consisting of Nos. 1, 2, and 3. Therefore, interest No. 
10 must be treated as a separate property for 1955 and all subsequent 
taxable years unless consent is obtained from the Commissioner to treat 
such interest in a different manner.

    (e) Termination of election--(1) Taxable years beginning after 
December 31, 1963, in the case of oil and gas wells. In the case of oil 
and gas wells, the election provided for under section 614(b) and 
paragraph (a) of this section to form an aggregation of separate 
operating mineral interests shall not apply with respect to any taxable 
year beginning after December 31, 1963. In addition, if a taxpayer 
treated certain separate operating mineral interests in a single tract 
or parcel of land as separate rather than as an aggregation and decides 
to continue such treatment for taxable years beginning after December 
31, 1963, he must make an appropriate election under section 614(b) as 
amended by the Revenue Act of 1964. See Sec. 1.614-8.
    (2) Taxable years beginning after December 31, 1957, in the case of 
mines. Except in the case of oil and gas wells, the election provided 
for under section 614(b) and paragraph (a) of this section to form an 
aggregation of separate operating mineral interests shall not apply with 
respect to any taxable year beginning after December 31, 1957. Thus, if 
a taxpayer makes a binding election under section 614(b) to form an 
aggregation of separate operating mineral interests within an operating 
unit for taxable years beginning before January 1, 1958, he must make a 
new election for the first taxable year beginning after December 31, 
1957, under section 614(c) within the time prescribed in Sec. 1.614-3 
if he wishes to aggregate any separate operating mineral interests 
within such operating unit. A new election must be made under section 
614(c) notwithstanding the fact that the aggregation formed under 
section 614(b) would constitute a valid aggregation under section 
614(c). Failure to make such an election within the time prescribed 
shall constitute an election to treat each separate operating mineral 
interest within the operating unit as a separate property for taxable 
years beginning after December 31, 1957.
    (3) Taxable years beginning before January 1, 1958, in the case of 
mines. An election made under section 614(b) and paragraph (a) of this 
section to form an aggregation of separate operating mineral interests 
within a particular operating unit shall not apply with respect to any 
taxable year beginning prior to January 1, 1958, for which the taxpayer 
makes an election under section 614(c)(3)(B) and paragraph (f)(2) of 
Sec. 1.614-3 which is applicable to any separate operating mineral 
interest within the same operating unit. The provisions of this 
subparagraph may be illustrated by the following examples:

    Example 1. In 1953, taxpayer A owned six separate operating mineral 
interests, designated No. 1 through No. 6, which he operated as a unit. 
Operating mineral interests Nos. 1 through 5 comprise a mine, and 
operating mineral interest No. 6 represents one mineral deposit in a 
single tract of land which is being extracted by means of two mines. 
Taxpayer A previously made a binding election under section 614(b) to 
aggregate operating mineral interests Nos. 1 through 5

[[Page 476]]

and to treat operating mineral interest No. 6 as a separate property. 
Under section 614(c)(2) and (3)(B) taxpayer A makes an election which is 
applicable for the taxable year 1954 and all subsequent taxable years to 
treat operating mineral interest No. 6 as two separate operating mineral 
interests. Therefore, the previous election of taxpayer A to aggregate 
operating mineral interests Nos. 1 through 5 under section 614(b) does 
not apply. Unless taxpayer A also makes an election to aggregate 
operating mineral interests Nos. 1 through 5 as one property under 
section 614(c)(1) and (3)(B) within the time prescribed in paragraph 
(f)(2) of Sec. 1.614-3, he shall be deemed to have made an election to 
treat each of such interests as a separate property for 1954 and all 
subsequent taxable years.
    Example 2. In 1953, taxpayer B owned six separate operating mineral 
interests, designated No. 1 through No. 6, which he operated as a unit. 
Operating mineral interests Nos. 1 through 3 comprise a mine and Nos. 4 
through 6 comprise a second mine. Taxpayer B previously made a binding 
election under section 614(b) to aggregate operating mineral interests 
Nos. 1 through 8 and to treat Nos. 4 through 6 as separate properties. 
Under section 614(c) (1) and (3)(B) taxpayer B makes an election which 
is applicable for the taxable year 1954 and all subsequent taxable years 
to aggregate operating mineral interests Nos. 4 through 6 as one 
property. The previous election of the taxpayer under section 614(b) to 
aggregate operating mineral interests Nos. 1 through 3 does not apply 
even though such aggregation would constitute a valid aggregation if 
formed under section 614(c)(1). Therefore, if taxpayer B wishes to 
continue to treat operating mineral interests Nos. 1 through 3 as one 
property, he must also make an election to do so under section 614(c) 
(1) and (3)(B) within the time prescribed in paragraph (f)(2) of Sec. 
1.614-3.

    (4) Bases of separate operating mineral interests. If an aggregation 
formed under section 614(b) is terminated by reason of the provisions of 
section 614(b)(4)(A), is terminated under section 614(b)(4)(B) for any 
taxable year after the first taxable year to which the election under 
section 614(b) applies, or is terminated by reason of the provisions of 
section 614(b) as amended by the Revenue Act of 1964, the bases of the 
separate operating mineral interests (and combinations thereof) included 
in such aggregation shall be determined in accordance with the rules 
contained in paragraph (a)(2) of Sec. 1.614-6 as of the first day of 
the first taxable year for which the termination is effective. However, 
if by reason of the provisions of section 614(b)(4)(B), an election to 
aggregate under section 614(b) does not apply for any taxable year for 
which such election was made, the bases of the separate operating 
mineral interests included in the aggregation formed under section 
614(b) shall be determined without regard to the election under section 
614(b).
    (f) Alternative treatment of separate operating mineral interests in 
the case of oil and gas wells. For rules relating to an alternative 
treatment of separate operating mineral interests in the case of oil and 
gas wells, see Sec. 1.614-4.

[T.D. 6524, 26 FR 147, Jan. 10, 1961, as amended by T.D. 6859, 30 FR 
13700, Oct. 28, 1965]