Exhibit 10.a Unincorporated Association Contract entered into by and between Minera Santa Rita S. de R.L. de C.V. ("Santa Rita"), represented by Jack Veeder Everett and Roger Austin Newell, of the one part, as active member, and Grupo Minero FG S.A....Unincorporated Association Contract • March 25th, 2002 • Leadville Mining & Milling Corp • Gold and silver ores
