| ($ in thousands) | 2009 | 2008 |
| Assets | ||
| Cash and cash equivalents | $ 135,447 | $188,264 |
| Operating investments, at market | 182,153 | 178,251 |
| Collateral held for securities lending | 62,062 | 103,656 |
| Accounts receivable, net | 280,708 | 264,513 |
| Inventories, prepaid expenses and deferred charges | 47,794 | 53,968 |
| Contributions receivable, net | 57,004 | 45,119 |
| Notes receivable, net | 19,566 | 19,561 |
| Other assets | 12,044 | 12,740 |
| Investments held for long-term purposes | 1,393,771 | 1,881,683 |
| Property, plant and equipment, net | 1,349,270 | 1,315,340 |
| Interest in net assets of foundation | 11,653 | 16,859 |
| Investments in perpetual trusts held by others | 40,691 | 51,324 |
| Total Assets | $3,592,163 | $4,131,278 |
| Liabilities and Net Assets | ||
| Liabilities: | ||
| Accounts payable and accrued expenses | $ 259,230 | $283,092 |
| Advance receipt of sponsored research revenues | 30,454 | 30,811 |
| Deferred revenue | 51,306 | 53,100 |
| Third-party settlements payable, net | 62,181 | 54,022 |
| Securities lending liabilities | 63,390 | 103,656 |
| Accrued pension, postretirement, postemployment obligations | 237,320 | 191,205 |
| Long-term debt | 643,734 | 682,974 |
| Asset retirement obligation | 17,326 | 16,999 |
| Refundable U.S. Government grants for student loans | 15,984 | 15,870 |
| Total Liabilities | $ 1,380,925 | 1,431,729 |
| Net assets: | ||
| Unrestricted | 1,724,361 | 2,159,147 |
| Temporarily restricted | 178,666 | 242,367 |
| Permanently restricted | 308,211 | 298,035 |
| Total Net Assets | 2,211,238 | 2,699,549 |
| Total Liabilities and Net Assets | $ 3,592,163 | $4,131,278 |