1 EXHIBIT 15 JOINT FILING AGREEMENT AGREEMENT dated as May 9, 2001 among Samstock, L.L.C. a Delaware limited liability company; EGI -- Fund (00) Investments, L.L.C., a Delaware limited liability company; and Halmostock Limited Partnership, a Wyoming...Joint Filing Agreement • May 10th, 2001 • Samstock LLC • Services-business services, nec
