Working Capital (Tables)

6 Months Ended

Nov. 30, 2013

Receivables

Receivables-net consist of:

	November 30,		May 31,
In thousands	2013		2013
Trade notes and accounts receivable	$	120,904	$	126,070
Other	1,478		852
	$	122,382	$	126,922

Inventories

Inventories consist of:

	November 30,		May 31,
In thousands	2013		2013
Finished products	$	7,171	$	5,267
Work in process	9,534		8,630
Raw materials	20,478		20,090
Total inventories at LIFO cost	37,183		33,987
Natural aggregate finished products	22,077		21,836
Raw materials	406		378
Parts and supplies	52,891		48,853
Total inventories at average cost	75,374		71,067
Total inventories	$	112,557	$	105,054

Accrued Interest, Compensation and Other

Accrued interest, compensation and other consists of:

	November 30,		May 31,
In thousands	2013		2013
Interest	$	17,796	$	17,801
Compensation and employee benefits	16,563		15,439
Casualty insurance claims	16,301		15,890
Income taxes	5,382		4,666
Property taxes and other	16,155		8,540
	$	72,197	$	62,336