| Reserves* | Tons (in thousands) | % | |||
|
| |||||
| Underground | 1,048,426 | 88% | |||
| Surface | 147,086 | 12% | |||
|
| |||||
| Total | 1,195,512 | ||||
| Low Sulfur Reserves | 75% | ||||
| Metallurgical Reserves | 34% | ||||
| Other Information | |||||
|
| |||||
| Typical BTU per pound | 13,440 | ||||
| # Leases | 147 | ||||
| # Lessees | 45 | ||||
|
| |||||
| Partial Lessee List | |||||
| • Arch Coal | |||||
| • Massey Energy | |||||
| • CONSOL Energy | |||||
| • Alpha Natural Resources | |||||
| • Patriot | |||||
*As of December 31, 2009