Exhibit 21.1

Subsidiaries of Royal Energy Resources, Inc.

Entity	Jurisdiction of Organization	Ownership Percentage
Rhino Resource Partners, LP	Delaware		*
Blaze Minerals, LLC	West Virginia		100	%
Royal Ventures, LLC	Delaware		100	%

* As of March 31, 2018, Royal Energy Resources, Inc. owns 100% of the general partner interest, 50.9% of the common units and 85.8% of the subordinated units, and 0% of the Series A Preferred Units.

Subsidiaries of Rhino Resource Partners, LP**

Entity	Jurisdiction of Organization
Rhino Energy LLC	Delaware
CAM Mining LLC	Delaware
Rhino Northern Holdings LLC	Delaware
Hopedale Mining LLC	Delaware
Pennyrile Energy LLC	Delaware
Clinton Stone LLC	Delaware

** 100% owned by Rhino Resource Partners, LP