CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 17.2	$ 16.8
Trade receivables, net of allowance of $0.3 in 2020 and $0.3 in 2019	55.7	90.0
Inventories, net	117.0	113.4
Prepaid and other current assets	49.7	51.8
Total current assets	239.6	272.0
Investments	2.4	2.2
Property, plant and equipment, net of accumulated depreciation of $209.4 in 2020 and $202.2 in 2019	528.5	468.8
Deferred income taxes	0.0	1.5
Right of use assets - operating leases, net	16.5	16.9
Other assets	99.1	91.5
Total assets	886.1	852.9
Current liabilities
Accounts payable, trade and other	31.2	83.1
Accrued and other current liabilities	35.6	36.4
Operating lease liabilities - current	2.0	2.1
Income taxes	0.0	0.9
Total current liabilities	68.8	122.5
Long-term debt	208.7	154.6
Operating lease liabilities - long-term	14.7	15.4
Environmental liabilities	6.4	6.4
Deferred income taxes	5.0	0.0
Other long-term liabilities	11.3	10.0
Commitments and contingent liabilities (Note 12)
Total current and long-term liabilities	314.9	308.9
Equity
Common stock; $0.001 par value; 2 billion shares authorized in 2018; 146,360,433 and 146,085,696 shares issued; 146,251,597 and 145,981,684 outstanding at June 30, 2020 and December 31, 2019, respectively	0.1	0.1
Capital in excess of par value of common stock	547.5	516.4
Retained earnings	74.5	76.6
Accumulated other comprehensive loss	(50.1)	(48.3)
Treasury stock, common; 108,836 and 104,012 shares at June 30, 2020 and December 31, 2019, respectively	(0.8)	(0.8)
Total equity	571.2	544.0
Total liabilities and equity	$ 886.1	$ 852.9