Whenever any notice or other communication (a “Delivery”) is required to be given or delivered under the terms of this Pledge Agreement, it shall be in writing and delivered by hand delivery or Federal Express or registered or certified United States mail, postage prepaid and return receipt requested, and will be deemed to have been given or delivered on the date such notice or other communication is so delivered. Any Delivery to the Borrower shall be addressed to Royal Energy Resources, Inc., 56 Broad Street, Suite 2, Charleston, SC 29401, or to such other address as the Borrower may hereafter designate to the Lender in writing; any Delivery to the Lender shall be addressed to Rhino Resource Partners LP, 424 Lewis Hargett Circle, Suite 250, Lexington, KY 40503, or to such other address as the Lender may hereafter designate to the Borrower in writing.