The following table presents the Company's active mining operations as of December 31, 2014 in which the employees are represented by organized labor unions:



Mine		Current Agreement Expiration Date

U. S.
Kayenta ⁽¹⁾		September 2019

Australia
Owner-operated mines:
Wambo Open-Cut ⁽²⁾⁽³⁾		August 2014
North Wambo Underground ⁽²⁾⁽³⁾		April 2015
North Goonyella ⁽³⁾		May 2015
Metropolitan ⁽³⁾		August 2015
Millennium ⁽³⁾		October 2015
Wilpinjong		May 2016
Coppabella ⁽⁴⁾		October 2016
Moorvale ⁽⁴⁾		June 2017

Contractor-operated mines:
Burton		December 2016


⁽¹⁾	Hourly workers at the Company’s Kayenta Mine in Arizona are represented by the UMWA under the Western Surface Agreement, which is effective through September 16, 2019. This agreement covers approximately 9% of the Company’s U.S. subsidiaries’ hourly employees, who generated approximately 4% of the Company’s U.S. production during the year ended December 31, 2014.


⁽²⁾	Employees of the Company's Wambo Coal Handling and Preparation Plant facility also operate under a separate enterprise agreement. That agreement expired in October 2014 and negotiations are underway. There have been no disruptions to the operations of the plant as a result of the expiration of the agreement.

⁽³⁾

Negotiations for the Wambo Open-Cut, North Wambo Underground, North Goonyella, Metropolitan and Millennium mines are all underway or have been scheduled and the mines continue to operate. Hourly employees of these mines comprise approximately 56% of the Company's Australian subsidiaries hourly employees, who generated approximately 42% of the Company's Australian production during the year ended December 31, 2014.


⁽⁴⁾	Employees of the Company's Coppabella/Moorvale Coal Handling and Preparation Plant facility also operate under a separate enterprise agreement. That agreement expired in March 2014 and negotiations are underway. There have been no disruptions to the operations of the plant as a result of the expiration of the agreement.