Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^*

ROBERTSON CORBIN J III

2. Date of Event Requiring Statement (MM/DD/YYYY) 5/21/2013

3. Issuer Name and Ticker or Trading Symbol

NATURAL RESOURCE PARTNERS LP [NRP]

(Last) (First) (Middle)

601 JEFFERSON, SUITE 3600

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)

(Street)

HOUSTON, TX 77002

(City) (State) (Zip)

5. If Amendment, Date Original Filed (MM/DD/YYYY)

6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Units	1487619	D ⁽¹⁾
Common Units	387	I	By Spouse ⁽²⁾
Common Units	50461	I	By The Corbin James Robertson III 2009 Family Trust ⁽³⁾
Common Units	26231	I	By CIII Capital Management, LLC ⁽⁴⁾

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)

Explanation of Responses:
( 1)	Corbin J. Robertson III shares beneficial ownership of 23,973 common units with his spouse, Brooke Robertson.
( 2)	Corbin J. Robertson III disclaims beneficial ownership of these common units, and this report shall not be deemed an admission that Corbin J. Robertson III is the beneficial owner of such common units for purposes of Section 16 or for any other purpose.
( 3)	The beneficiary of The Corbin James Robertson III 2009 Family Trust is the family of Corbin J. Robertson III. Corbin J. Robertson III is the Trust Advisor for The Corbin James Robertson III 2009 Family Trust and may be deemed to beneficially own the common units owned by The Corbin James Robertson III 2009 Family Trust.
( 4)	Corbin J. Robertson III is the controlling Manager of CIII Capital Management, LLC and may be deemed to beneficially own the common units owned by CIII Capital Management, LLC.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
ROBERTSON CORBIN J III 601 JEFFERSON SUITE 3600 HOUSTON, TX 77002	X

Signatures
Corbin J. Robertson III		5/22/2013
^** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 5(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).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.