COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2012

Commitments Due

We have commitments in the form of unconditional purchase obligations as of December 31, 2012. These include commitments for the purchase of property, plant & equipment of $3,880,000 and commitments for noncapital purchases of $50,582,000. These commitments are due as follows:

in thousands	Unconditional Purchase Obligations
Property, Plant & Equipment
2013		$3,880
Thereafter		0
Total		$3,880
Noncapital
2013		$15,432
2014–2015		20,062
2016–2017		6,363
Thereafter		8,725
Total		$50,582

Minimum Royalties Under Mineral Leases

We have commitments in the form of minimum royalties under mineral leases as of December 31, 2012 in the amount of $222,230,000, due as follows:

in thousands	Mineral Leases
Mineral Royalties
2013		$24,693
2014–2015		39,544
2016–2017		25,138
Thereafter		132,855
Total		$222,230

Summary of Standby Letters of Credit

Our standby letters of credit as of December 31, 2012 are summarized by purpose in the table below:

in thousands
Standby Letters of Credit
Risk management insurance	$35,110
Industrial revenue bond	14,230
Reclamation/restoration requirements	7,862
Other	100
Total	$57,302