Excerpts from Fueros letter details type of mining (silver and gold), mining conditions, personnel, shortage of water (need to open Pozo of specified size), and Indian incursions. Requests acknowledgement of receipt of royal fifth at real Caxa de los Alamos. Document fragment by unknown author discusses construction of Plaza with houses of earth, distribution of weapons for defense, establishment of partida to patrol, and necessity for escort of troops to help workers. Fueros complains to viceroy about how officials at real tribunal de Cuentas handled his account. Sends copy of response from tribunal officials and his own response back to them. Also draft response from Mexico Fueros indicates shipment of gold to real Caxa de los Alamos as royal fifth. Memo notes amount received in preceeding year as royal fifth from these Placeres. (S. Fiederlein, may 1987)