Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
ROBERTSON CORBIN J JR
  2. Issuer Name and Ticker or Trading Symbol
NATURAL RESOURCE PARTNERS LP [NRP]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chairman and CEO
(Last)
(First)
(Middle)
601 JEFFERSON, SUITE 3600
3. Date of Earliest Transaction (Month/Day/Year)
02/12/2013
(Street)

HOUSTON, TX 77002
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Units (1) 02/12/2013   M   35,000 A (1) 1,047,643 D  
Common Units (1) 02/12/2013   D   35,000 D $ 22.01 (1) 1,012,643 D  
Common Units               31,540 I By Spouse
Common Units               17,279,860 I By Western Pocahontas Properties Limited Partnership (2)
Common Units               5,627,120 I By Western Bridgeport, Inc. (3)
Common Units               56 I By QMP Inc. (4)
Common Units               110,206 I By Western Pocahontas Corporation (5)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Phantom Units (6) (9) 02/12/2013   M     35,000 02/12/2013 02/12/2013 Common Units 35,000 (9) 0 D  
Phantom Units (6) (7) (8)             02/11/2014 02/11/2014 Common Units 33,000   33,000 D  
Phantom Units (6) (7) (8)             02/10/2015 02/10/2015 Common Units 33,000   33,000 D  
Phantom Units (6) (7) (8)             02/14/2016 02/14/2016 Common Units 32,000   32,000 D  
Phantom Units (6) (7) (8) 02/13/2013   A   32,000   02/13/2017 02/13/2017 Common Units 32,000 (7) (8) 32,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ROBERTSON CORBIN J JR
601 JEFFERSON, SUITE 3600
HOUSTON, TX 77002
  X   X   Chairman and CEO  

Signatures

 Corbin J. Robertson, Jr.   02/13/2013
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The common units were deemed to have been purchased and sold on the date of vesting of the phantom units listed in Table II, which were paid in cash on a one for one basis based on the average closing price of the common units for the 20 trading days immediately preceding the date of vesting.
(2) These units are beneficially owned by Western Pocahontas Properties Limited Partnership, whose general partner is Western Pocahontas Corporation, a corporation controlled by Mr. Robertson. Mr. Robertson also holds indirect limited partner interests in Western Pocahontas Properties Limited Partnership. All the common units owned by Western Pocahontas Properties Limited Partnership are reported on this line. Mr. Robertson disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.
(3) Mr. Robertson, Jr. is the controlling shareholder of Western Bridgeport, Inc. Mr. Robertson, Jr. disclaims beneficial ownership of the units held by Western Bridgeport, Inc., except to the extent of his pecuniary interest therein.
(4) Mr. Robertson, Jr. is the controlling shareholder of QMP, Inc. Mr. Robertson, Jr. disclaims beneficial ownership of the units held by QMP, Inc., except to the extent of his pecuniary interest therein.
(5) Mr. Robertson, Jr. is the controlling shareholder of Western Pocahontas Corporation. Mr. Robertson, Jr. disclaims beneficial ownership of the units held by Western Pocahontas Corporation, except to the extent of his pecuniary interest therein.
(6) The phantom units were originally granted to the reporting person under the issuer's long term incentive plan.
(7) The phantom units will be paid in cash based on the average closing price of the common units for the 20 trading days immediately preceding the date of vesting.
(8) Award includes tandem distribution equivalent rights pursuant to which the quarterly distributions paid by the partnership on each unit will be accrued over the vesting period and paid on vesting.
(9) As described in Footnote 1, upon vesting, the phantom units were paid in cash on a one for one basis based on the average closing price of the common units for the 20 trading days immediately preceding the date of vesting.

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