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Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Inventories as of March 31, 2018 and December 31, 2017 consisted of the following:



	March 31, 2018				December 31, 2017
	(Dollars in millions)
Materials and supplies	$	103.1			$	101.5
Raw coal	56.6				78.1
Saleable coal	105.8				111.7
Total	$	265.5			$	291.3