Mining properties consist of the following (in thousands):



March 31, 2012	Palmarejo			San Bartolomé			Kensington			Rochester			Martha			Endeavor			Other		Total
Operational mining properties	$	138,333		$	69,019		$	325,102		$	113,094		$	13,226		$	—		$	—	$	658,774
Accumulated depletion	(61,065		)	(15,871		)	(29,441		)	(98,391		)	(10,807		)	—			—		(215,575		)
	77,268			53,148			295,661			14,703			2,419			—			—		443,199
Mineral interests (A)	1,658,389			26,642			—			—			—			44,033			—		1,729,064
Accumulated depletion	(179,015		)	(6,348		)	—			—			—			(11,678		)	—		(197,041		)
	1,479,374			20,294			—			—			—			32,355			—		1,532,023
Non-producing and development properties	—			—			—			—			—			—			142		142
Total mining properties	$	1,556,642		$	73,442		$	295,661		$	14,703		$	2,419		$	32,355		$	142	$	1,975,364



December 31, 2011	Palmarejo			San Bartolomé			Kensington			Rochester			Martha			Endeavor			Other		Total
Operational mining properties	$	134,296		$	68,684		$	321,456		$	112,826		$	12,643		$	—		$	—	$	649,905
Accumulated depletion	(53,060		)	(14,989		)	(27,160		)	(97,834		)	(10,373		)	—			—		(203,416		)
	81,236			53,695			294,296			14,992			2,270			—			—		446,489
Mineral interests (A)	1,658,389			26,642			—			—			—			44,033			—		1,729,064
Accumulated depletion	(158,627		)	(6,007		)	—			—			—			(10,034		)	—		(174,668		)
	1,499,762			20,635			—			—			—			33,999			—		1,554,396
Non-producing and development properties	—			—			—			—			—			—			142		142
Total mining properties	$	1,580,998		$	74,330		$	294,296		$	14,992		$	2,270		$	33,999		$	142	$	2,001,027


A.	See mineral interest explanations under operational mining properties for Palmarejo and San Bartolomé.