COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2013

COMMITMENTS AND CONTINGENCIES [Abstract]

Commitments Due

	Unconditional
	Purchase
in thousands	Obligations
Property, Plant & Equipment
2014	$          5,813
Thereafter	0
Total	$          5,813
Noncapital
2014	$        27,991
2015–2016	30,315
2017–2018	9,380
Thereafter	7,366
Total	$        75,052

Minimum Royalties Under Mineral Leases

	Mineral
in thousands	Leases
Mineral Royalties
2014	$        17,142
2015–2016	26,425
2017–2018	18,551
Thereafter	123,750
Total	$      185,868

Summary of Standby Letters of Credit

in thousands
Standby Letters of Credit
Risk management insurance	$       32,839
Industrial revenue bond	14,230
Reclamation/restoration requirements	6,324
Total	$       53,393