
	As of September 30, 2022			As of December 31, 2021
	(In millions of dollars)
Trade Receivables, Net
Billed trade receivables	$	312.1		$	333.5
Allowance for doubtful receivables		(0.6	)		(0.8	)
Trade receivables, net	$	311.5		$	332.7

Inventories1
Finished products	$	88.1		$	90.3
Work-in-process		229.6			162.2
Raw materials		208.6			143.0
Operating supplies		11.8			9.1
Total	$	538.1		$	404.6

Property, Plant and Equipment, Net
Land and improvements	$	28.4		$	26.0
Buildings and leasehold improvements		184.2			179.0
Machinery and equipment		1,190.6			1,151.5
Construction in progress2		136.6			75.3
Property, plant and equipment, gross		1,539.8			1,431.8
Accumulated depreciation and amortization		(550.4	)		(480.4	)
Assets held for sale		0.2			3.8
Property, plant and equipment, net	$	989.6		$	955.2

Other Accrued Liabilities
Uncleared cash disbursements	$	19.8		$	10.9
Accrued income taxes and other taxes payable		11.0			9.5
Accrued interest		10.3			9.9
Short-term environmental accrual – Note 6		1.8			2.6
Short-term operating lease liabilities		9.3			9.0
Other – Note 4		36.3			16.5
Total	$	88.5		$	58.4

Long-Term Liabilities
Workers' compensation accrual	$	31.5		$	31.9
Long-term environmental accrual – Note 6		13.1			14.2
Other long-term liabilities		27.6			26.4
Total	$	72.2		$	72.5

At September 30, 2022 and December 31, 2021, the current cost of our inventory exceeded its stated last-in, first-out (“LIFO”) value by $119.3 million and $137.1 million, respectively.

Based on market conditions, we temporarily idled projects within Construction in progress totaling $19.2 million and $24.9 million as of September 30, 2022 and December 31, 2021, respectively, all of which are expected to resume at a future date.