| Revenues: | — | — | — |
| Coal revenues | 2,946.58a | 3,456.63a | 4,092.99a |
| Other revenues | 10.71a | 14.79a | 8.61a |
| Total revenues | 2,957.29a | 3,471.42a | 4,101.59a |
| Costs and expenses: | — | — | — |
| Cost of coal sales (exclusive of items shown separately below) | -2,451.6a | -2,356.14a | -2,285.97a |
| Depreciation, depletion and amortization | -167.33a | -136.87a | -107.62a |
| Accretion on asset retirement obligations | -25.05a | -25.5a | -23.77a |
| Amortization of acquired intangibles, net | -6.7a | -8.52a | -19.5a |
| Selling, general and administrative expenses (exclusive of depreciation, depletion and amortization shown separately above) | -74a | -82.39a | -71.62a |
| Other operating loss (income) | 4.75a | -1.09a | 12.24a |
| Total costs and expenses | -2,729.43a | -2,608.33a | -2,520.71a |
| Income from operations | 227.85a | 863.09a | 1,580.88a |
| Other (expense) income: | — | — | — |
| Interest expense | -3.81a | -6.92a | -21.8a |
| Interest income | 18.21a | 11.93a | 3.19a |
| Loss on extinguishment of debt | 0a | -2.75a | 0a |
| Equity loss in affiliates | -20.3a | -18.26a | -14.35a |
| Miscellaneous (expense) income, net | -11.2a | -1.62a | 6.83a |
| Total other expense, net | -17.1a | -17.63a | -26.13a |
| Income before income taxes | 210.75a | 845.46a | 1,554.75a |
| Income tax expense | -23.17a | -123.5a | -106.21a |
| Net income | 187.58a | 721.96a | 1,448.55a |