* Amount of securities beneficially owned includes 6,676,912 Common Units representing limited partner interests (each, a “ Common Unit ”) in Rhino Resource Partners LP (the “ Partnership ”), 1,060,339 Subordinated Units representing limited partner interests in the Partnership (each, a “ Subordinated Unit ”), and 0 Series A Convertible Preferred Units (each, a “ Preferred Unit ” and together with the Common Units and Subordinated Units, the “ Units ”), owned by Royal Energy Resources, Inc. (“ Royal Energy ”). The Subordinated Units will convert into Common Units on a one-for-one basis at the times set forth in, and subject to the terms and conditions of, the Fourth Amended and Restated Agreement of Limited Partnership of the Partnership (the “ Partnership Agreement ”), and are entitled to vote on a one-for-one basis with the Common Units. The Preferred Units are convertible at the option of the Partnership at the times set forth in, and subject to the terms and conditions of, the Partnership Agreement, and are entitled to vote on an as-converted basis with the Common Units. Each Series A Preferred Unit will convert into a number of Common Units equal to the quotient (the “ Series A Conversion Ratio ”) of (i) the sum of $10.00 and any unpaid distributions in respect of such Preferred Unit divided by (ii) 75% of the volume-weighted average closing price of the Common Units for the preceding 90 trading days (the “ VWAP ”); provided however, that the VWAP will be capped at a minimum of $2.00 and a maximum of $10.00. On December 31, 2021, all outstanding Preferred Units will convert into common units at the then applicable Series A Conversion Ratio.

** Calculation of percentage based on a total of 12,905,799 Common Units and 1,235,534 Subordinated Units, and 1,500,000 Preferred Units outstanding which are convertible into an estimated 4,395,604 Common Units at $3.41 per Common Unit, for a total of 18,536,937 Units outstanding, which, based upon information provided by the Company, is the number of Common Units, Subordinated Units and Preferred Units issued and outstanding.

* Amount of securities beneficially owned includes 6,676,912 Common Units representing limited partner interests (each, a “ Common Unit ”) in Rhino Resource Partners LP (the “ Partnership ”), 1,060,339 Subordinated Units representing limited partner interests in the Partnership (each, a “ Subordinated Unit ”), and 0 Series A Convertible Preferred Units (each, a “ Preferred Unit ” and together with the Common Units and Subordinated Units, the “ Units ”), owned by Royal Energy Resources, Inc. (“ Royal Energy ”). The Subordinated Units will convert into Common Units on a one-for-one basis at the times set forth in, and subject to the terms and conditions of, the Fourth Amended and Restated Agreement of Limited Partnership of the Partnership (the “ Partnership Agreement ”), and are entitled to vote on a one-for-one basis with the Common Units. The Preferred Units are convertible at the option of the Partnership at the times set forth in, and subject to the terms and conditions of, the Partnership Agreement, and are entitled to vote on an as-converted basis with the Common Units. Each Series A Preferred Unit will convert into a number of Common Units equal to the quotient (the “ Series A Conversion Ratio ”) of (i) the sum of $10.00 and any unpaid distributions in respect of such Preferred Unit divided by (ii) 75% of the volume-weighted average closing price of the Common Units for the preceding 90 trading days (the “ VWAP ”); provided however, that the VWAP will be capped at a minimum of $2.00 and a maximum of $10.00. On December 31, 2021, all outstanding Preferred Units will convert into common units at the then applicable Series A Conversion Ratio.

** Calculation of percentage based on a total of 12,905,799 Common Units and 1,235,534 Subordinated Units, and 1,500,000 Preferred Units outstanding which are convertible into an estimated 4,395,604 Common Units at $3.41 per Common Unit, for a total of 18,536,937 Units outstanding, which, based upon information provided by the Company, is the number of Common Units, Subordinated Units and Preferred Units issued and outstanding.

* Amount of securities beneficially owned includes 6,676,912 Common Units representing limited partner interests (each, a “ Common Unit ”) in Rhino Resource Partners LP (the “ Partnership ”), 1,060,339 Subordinated Units representing limited partner interests in the Partnership (each, a “ Subordinated Unit ”), and 0 Series A Convertible Preferred Units (each, a “ Preferred Unit ” and together with the Common Units and Subordinated Units, the “ Units ”), owned by Royal Energy Resources, Inc. (“ Royal Energy ”). The Subordinated Units will convert into Common Units on a one-for-one basis at the times set forth in, and subject to the terms and conditions of, the Fourth Amended and Restated Agreement of Limited Partnership of the Partnership (the “ Partnership Agreement ”), and are entitled to vote on a one-for-one basis with the Common Units. The Preferred Units are convertible at the option of the Partnership at the times set forth in, and subject to the terms and conditions of, the Partnership Agreement, and are entitled to vote on an as-converted basis with the Common Units. Each Series A Preferred Unit will convert into a number of Common Units equal to the quotient (the “ Series A Conversion Ratio ”) of (i) the sum of $10.00 and any unpaid distributions in respect of such Preferred Unit divided by (ii) 75% of the volume-weighted average closing price of the Common Units for the preceding 90 trading days (the “ VWAP ”); provided however, that the VWAP will be capped at a minimum of $2.00 and a maximum of $10.00. On December 31, 2021, all outstanding Preferred Units will convert into common units at the then applicable Series A Conversion Ratio.

** Calculation of percentage based on a total of 12,905,799 Common Units and 1,235,534 Subordinated Units, and 1,500,000 Preferred Units outstanding which are convertible into an estimated 4,395,604 Common Units at $3.41 per Common Unit, for a total of 18,536,937 Units outstanding, which, based upon information provided by the Company, is the number of Common Units, Subordinated Units and Preferred Units issued and outstanding.

This Amendment No. 4 to Schedule 13D modifies and supplements the Schedule 13D (the “ Original Statement ”) initially filed on February 1, 2016, as amended by Amendment No. 1 to Schedule 13D filed on March 28, 2016, as amended by Amendment No. 2 to Schedule 13D filed on April 22, 2016, as amended by Amendment No. 3 filed on January 12, 2017, with respect to the common units representing limited partner interests (each, a “ Common Unit ”) of Rhino Resource Partners LP (the “ Partnership ”). Except to the extent provided by the information contained in this Amendment No. 3, the Original Statement, as modified by Amendment Nos. 1 and 2, remains in full force and effect. Capitalized terms used herein without definition have the respective meanings ascribed to them in the Statement.

ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

Item 3 is hereby further supplemented by adding the following:

On January 27, 2017, Royal Energy disposed of all of its 200,000 Series A Convertible Preferred Units (the “ Preferred Units ”) for $10 per Preferred Unit in three separate transactions. 100,000 Preferred Units were conveyed to Weston Energy, LLC (“ Weston ”) to repay $1,000,000 of indebtedness to Weston. The remaining 100,000 Preferred Units were sold to a third party for $10 per Preferred Unit, and the proceeds were used to repay the balance of Royal Energy’s obligation to Weston.

ITEM 4. PURPOSE OF TRANSACTION

Item 4 is hereby further supplemented by adding the following:

On January 27, 2017, Royal Energy disposed of all of its 200,000 Preferred Units in three separate transactions. As described in Item 3, the proceeds were used to repay the balance of Royal Energy’s obligation to Weston.

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER

(a) — (b) The aggregate number and percentage of shares of Common Units beneficially owned by the Reporting Persons (on the basis of a total of 12,905,799 Common Units, 1,235,534 Subordinated Units and 1,500,000 Preferred Units issued and outstanding as reported to Royal Energy by Rhino are as follows:

The total Units reported as beneficially owned by each of Royal Energy, Mr. Tuorto and Mr. Hughs include the Units reported as beneficially owned by Royal Energy. Mr. Tuorto, as the chairman and chief executive officer of Royal Energy, may be deemed to share beneficial ownership of any Units beneficially owned by Royal Energy, but he disclaims such beneficial ownership to the extent such beneficial ownership exceeds his pecuniary interest in Royal Energy. Mr. Hughs, as a vice president and director of Royal Energy, may be deemed to share beneficial ownership of any Units beneficially owned by Royal Energy, but he disclaims such beneficial ownership to the extent such beneficial ownership exceeds his pecuniary interest in Royal Energy.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

The original statement shall be signed by each person on whose behalf the statement is filed or his authorized representative. If the statement is signed on behalf of a person by his authorized representative (other than an executive officer or general partner of the filing person), evidence of the representative’s authority to sign on behalf of such person shall be filed with the statement: provided, however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated by reference. The name and any title of each person who signs the statement shall be typed or printed beneath his signature.