Asset retirement obligation (Tables)

12 Months Ended

Dec. 31, 2018

Asset Retirement Obligation Tables

Net present value of the ARO

	2018			2017			2016
ARO balance, beginning of the year	$	56,702		$	55,240		$	51,240
Accretion expense		2,069			2,283			4,000
Costs incurred		-			(821	)		-
Change in ARO estimates		(31,993	)		-			-
ARO balance, end of the year		26,778			56,702			55,240