Exhibit 3.66

Exhibit 3.66
CORPORATE ACCESS NUMBER: 2018172110
Government of Alberta
BUSINESS CORPORATIONS ACT
CERTIFICATE OF AMALGAMATION
COAL VALLEY RESOURCES INC.
IS THE RESULT OF AN AMALGAMATION FILED ON 2014/04/24.
8:30 a.m. MDT

Amalgamate Alberta Corporation—Registration Statement
Alberta Registration Date: 2014/04/24
Corporate Access Number: 2018172110
Service Request Number: Alberta Corporation Type: Legal Entity Name:
French Equivalent Name: Nuans N umber:
Nuans Date:
French Nuans Number: French Nuans Date:
REGISTERED ADDRESS Street:
Legal Description:
City: Province: Postal Code:
RECORDS ADDRESS Street:
Legal Description: City:
Province: Postal Code:
ADDRESS FOR SERVICE BY MAIL
Post Office Box: City:
Province:
Postal Code: Internet Mail ID:
21344227
Named Alberta Corporation
COAL VALLEY RESOURCES INC.
2900-10180 101 ST EDMONTON
ALBERTA T5J 3V5
2900-10180 101 ST EDMONTON
ALBERTA T5J 3V5
Share Structure: THE CORPORATION IS AUTHORJZED TO ISSUE AN UNLIMlTED NUMBER OF COMMON SHARES
Share Transfers Restrictions: SEE ELECTRONIC ATTACHMENT Number of Directors:
Min Number Of Directors:
Max Number Of Directors: Business Restricted To: Business Restricted From: Other Provisions:
10
NONE NONE
SEE ELECTRONIC
ATTACHMENT
Professional Endoresement
Professional Endorsement

Provided:
Future Dating Required:
Registration Date: 2014/04/24
Director
Last Name: First Name:
Middle Name:
MCCAUGHAN SEAN
Street/Box Number: 1600 OXFORD TOWER, 10235 101 ST City: EDMONTON
Province: ALBERTA
Postal Code: Country:
T5J 3G 1
Resident Canadian: Y Named On Stat Dec: Y
Last Name: CHAMBERS First Name: DEAN Middle Name: R.
Street/Box Number: 5TH FLOOR, 1133 YONGE ST
City: TORONTO
Province: Postal Code: Country:
ONTARIO M4TYY7
Resident Canadian: Y Named On Stat Dec:
Amalgamating Corporation
Corporate Access Number Legal Entity Name
2016412401 COAL VALLEY RESOURCES INC.
2016739431 1673943 ALBERTA LTD.
Attachment
Attachment Type
Microfilm Bar Code
Date Recorded
Other Rules or Provisions
ELECTRONIC
2014/04/24
Statutory Declaration
10000207112460338
2014/04/24
Restrictions on Share Transfers
ELECTRONIC
2014/04/24
Registration Authorized By: LEANNE C. KRAWCHUK

Articles of Amalgamation
For
COAL VALLEY RESOURCES INC.
Share Structure: THE CORPORATION IS AUTHORIZED TO ISSUE AN UNLIMITED NUMBER OF COMMON SHARES
Share Transfers
Restrictions:
Number of Directors: 1
Min Number of Directors:
SEE ELECTRONIC ATTACHMENT
Max Number of Directors: 10
Business Restricted To: NONE Business Restricted From: NONE
Other Provisions: SEE ELECTRONIC A
Registration Authorized By: LEANNE C. KRAWCHUK SOLICITOR

SHARE TRANSFER RESTRICTIONS So long as the corporatjon is a private issuer as defined in securities law, no securities of the corporation, other than non-convertible debt securities, shall be transferred without the consent of the directors, expressed by a resolution.
6664334_1 NATDOCS

OTHER PROVISIONS
1. Lien On Shares
The corporation shall have a first and paramount lien on a share registered in the name of a shareholder or his legal
representative, whether registered solely or jointly with any other person, for a debt of that shareholder to the corporation, including an amount unpaid in respect of a share issued by the corporation on the date it was incorporated under The Business Corporations Act (Alberta), whether the period for payment, fulfilment or discharge of that debt shall have actually arrived or not. The lien shall extend to all dividends and distributions of capital declared or otherwise payable on such shares.
2. Appointment of Directors
The directors may, between annual general meetings, appoint
one (1) or more additional directors of the corporation to serve
until the next annual general meeting, provided that the
number of additional directors shall not at any time exceedone-
third (1/3) of the number of directors who held office at the expiration of the last annual meeting of the corporation.
3. Borrowing
The directors may
(a) borrow money on the credit of the corporation,
(b) issue, reissue, sell or pledge debt obligations of the
corporation,
(c) give a guarantee on behalf of the corporation to secure performance of an obligation of any person, and
(d) mortgage, hypothecate, pledge or otherwise create a security interest in all or any property of the
corporation, owned or subsequently acquired, to secure any obligation of the corporation.
4. Meetings of Shareholders
Meetings of shareholders of the corporation may be held inside or outside the Province of Alberta.
6664317_1 NATDOCS