1 EXHIBIT 10.21 AGREEMENT REGARDING POST-CLOSING CONDUCT THIS AGREEMENT, dated as of July 14, 1998, is by and between the United States Department of the Treasury ("Treasury") on behalf of the United States Government, the United States Enrichment...Agreement Regarding Post-Closing Conduct • July 21st, 1998 • Usec Inc • Mining & quarrying of nonmetallic minerals (no fuels) • District of Columbia
