CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 303.2	$ 780.3
Receivables:
Trade receivables, net	332.7	112.8
Other	53.0	11.6
Contract assets	63.2	36.1
Inventories	404.6	152.0
Prepaid expenses and other current assets	48.7	28.6
Total current assets	1,205.4	1,121.4
Property, plant and equipment, net	955.2	627.2
Operating lease assets	46.2	26.5
Deferred tax assets, net	3.4
Intangible assets, net	67.7	26.7
Goodwill	39.3	18.8
Other assets	105.2	44.1
Total	2,422.4	1,864.7
Current liabilities:
Accounts payable	351.4	86.1
Accrued salaries, wages and related expenses	46.9	30.8
Other accrued liabilities	58.4	41.4
Total current liabilities	456.7	158.3
Long-term portion of operating lease liabilities	40.8	25.6
Pension and other postretirement benefits	92.5	1.3
Net liabilities of Salaried VEBA	20.6	17.8
Deferred tax liabilities	10.5	13.9
Long-term liabilities	72.5	77.3
Long-term debt	1,036.3	838.1
Total liabilities	1,729.9	1,132.3
Commitments and contingencies
Stockholders’ equity:
Preferred stock, 5,000,000 shares authorized at both December 31, 2021 and December 31, 2020; no shares were issued and outstanding at December 31, 2021 and December 31, 2020
Common stock, par value $0.01, 90,000,000 shares authorized at both December 31, 2021 and December 31, 2020; 22,700,404 shares issued and 15,865,118 shares outstanding at December 31, 2021; 22,647,455 shares issued and 15,812,169 shares outstanding at December 31, 2020	0.2	0.2
Additional paid in capital	1,078.9	1,068.6
Retained earnings	93.0	158.2
Treasury stock, at cost, 6,835,286 shares at both December 31, 2021 and December 31, 2020	(475.9)	(475.9)
Accumulated other comprehensive loss	(3.7)	(18.7)
Total stockholders’ equity	692.5	732.4
Total	$ 2,422.4	$ 1,864.7