As of September 30, 2023

As of December 31, 2022

(In millions of dollars)

Trade Receivables, Net

Billed trade receivables

$

352.1

$

297.7

Allowance for doubtful receivables

(0.6

)

(0.5

)

Trade receivables, net

$

351.5

$

297.2

Inventories1

Finished products

$

98.8

$

98.0

Work-in-process

217.0

242.5

Raw materials

158.3

174.0

Operating supplies

14.5

10.9

Inventories

$

488.6

$

525.4

Property, Plant and Equipment, Net

Land and improvements

$

38.4

$

28.4

Buildings and leasehold improvements

199.6

185.5

Machinery and equipment

1,255.4

1,232.7

Construction in progress

203.1

141.3

Property, plant and equipment, gross

1,696.5

1,587.9

Accumulated depreciation and amortization

(639.0

)

(574.9

)

Assets held for sale

—

0.2

Property, plant and equipment, net

$

1,057.5

$

1,013.2

Other Accrued Liabilities

Uncleared cash disbursements

$

23.3

$

13.6

Accrued income taxes and other taxes payable

10.7

8.9

Accrued interest

10.3

9.9

Short-term environmental accrual – Note 7

1.1

1.1

Short-term operating lease liabilities

8.2

9.1

Short-term finance lease liabilities

2.1

2.1

Other – Note 5

17.4

23.7

Other accrued liabilities

$

73.1

$

68.4

Long-Term Liabilities

Workers' compensation accrual

$

32.2

$

30.9

Long-term environmental accrual – Note 7

16.7

16.6

Other long-term liabilities

36.6

27.2

Long-term liabilities

$

85.5

$

74.7