ASSET RETIREMENT OBLIGATIONS (Tables)

3 Months Ended

Mar. 31, 2017

Mt. Hope Project and within the boundaries of the Plan of Operations ("PoO")

Property, plant and equipment

Asset retirement obligations for future mine closure and reclamation costs

	(in thousands)
At January 1, 2016	$	1,058
Accretion Expense		80
Adjustments*		316
At December 31, 2016	$	1,454
Accretion Expense		26
Adjustments*		9
At March 31, 2017	$	1,489

*Includes additions, annual changes to the escalation rate, the market-risk premium rate, or reclamation time periods.

Mt. Hope Project outside the PoO boundary and Liberty Property

Property, plant and equipment

Asset retirement obligations for future mine closure and reclamation costs

	Mt. Hope Project
	outside PoO
	boundary		Liberty
	(in thousands)
At January 1, 2016		22		118
Adjustments *		(7)		—
At December 31, 2016	$	15	$	118
Adjustments *		—		—
At March 31, 2017	$	15	$	118

*Includes reduced / reclaimed disturbance