Exhibit 3.3

PAGE 1

Delaware

The First State

     I, HARRIET SMITH WINDSOR, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED IS A TRUE AND CORRECT COPY OF THE CERTIFICATE OF FORMATION OF “OXFORD RESOURCES GP, LLC”, FILED IN THIS OFFICE ON THE SEVENTH DAY OF AUGUST, A.D. 2007, AT 9:19 O’CLOCK A.M.

4374736 8100

070895852
You may verify this certificate online
at corp.delaware.gov/authver.shtml /s/ Harriet Smith Windsor   Harriet Smith Windsor, Secretary of State AUTHENTICATION: 5906313

DATE: 08-07-07

CERTIFICATE OF FORMATION

OF

OXFORD RESOURCES GP, LLC

     This Certificate of Formation, dated August 7, 2007, has been duly executed and is filed pursuant to Sections 18-201 and 18-204 of the Delaware Limited Liability Company Act (the “Act”) to form a limited liability company (the “Company”) under the Act.

     1. Name. The name of the Company is:

OXFORD RESOURCES GP, LLC

     2. Registered Office; Registered Agent. The address of the registered office required to be maintained by Section 18-104 of the Act is:

Corporation Trust Center
1209 Orange Street
Wilmington, Delaware 19801

     The name and the address of the registered agent for service of process required to be maintained by Section 18-104 of the Act are:

The Corporation Trust Company
Corporation Trust Center
1209 Orange Street
Wilmington, Delaware 19801

[Signature Page Follows]

State of Delaware
Secretary of State
Division of Corporations
Delivered 09:26 AM 08/07/2007
FILED 09:19 AM 08/07/2007
SRV 070895852 — 4374736 FILE

     IN WITNESS WHEREOF, the undersigned has duly executed this Certificate of Formation as of the dale first written above.

/s/ Matthew P. Carbone  

Matthew P. Carbone 

Authorized Person 

[Signature Page to Certificate of formation of Oxford Resources GP, LLC]