Asset retirement obligation (Tables)

12 Months Ended

Dec. 31, 2014

Asset Retirement Obligation Tables

Net present value of the ARO

	2014			2013			2012
ARO balance, beginning of the year		$64,560			$61,813			$57,953
Accretion expense		800			3,960			3,860
Costs incurred		(2,111	)		(1,213	)		-
Change in ARO estimates		(13,249	)		-			-
ARO balance, end of the year		50,000			64,560			61,813