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VARIABLE INTEREST ENTITIES (Tables)

12 Months Ended

Dec. 31, 2019

VARIABLE INTEREST ENTITIES

Schedule of distributions

​

​	​	​	​	​	​	​	​
​	​	Alliance		​	Bluegrass		​
​	​	Minerals		​	Minerals		​
​	​	(in thousands)					​
Contributions	​	$	143,112	​	$	5,963	​
Distributions	​	​	71,916	​	​	2,996	​

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