Lysander Minerals had some stuff going on in Baja, but appears to be mostly focused on Canadian projects.

Lysander Minerals Corporation  LYM   (TSX)

Terry Concessions, Baja Norte.  Located in northeastern Baja California, Mexico. Lysander has entered into negotiation with Minera Cougar S.A. de C.V., the Mexican subsidiary of Central Minera Corporation (Formerly Delgratia) to have the right to expend U.S.$50,000 on due diligence investigations and studies. Provided a positive outcome of these studies,  Lysander will have the right to expend U.S.$200,000 within the next twelve months on exploration of the property in order to earn a 25% interest. Expenditures of U.S.$250,000 within the next twelve months, for exploration, pre-feasibility and pre-production investigations, will increase Lysander's interest to 51%. Thereafter, at Lysander's election, it may issue shares with a market value equivalent to U.S.$2,000,000 to increase its stake to 100%. The Terry Concessions cover some 210 square km on the NE coast of  Baja. They include the Puerto Rivada and Cerro de Oro precious metals prospects that were discovered in 1998. At Puerto Rivada, results from chip samples taken from an epithermal system at least 0.5 km in extent are reported to be in the order of 10 ppm of gold and 436 ppm of silver over widths from 1.3 to 3 m. There is also potential for bulk mineable mineralization in quartz stockwork zones. Cerro de Oro appears also to host an epithermal system. Chip samples over a width of eight m averaged 180.5 ppm of silver.  Lysander initiated sampling and mapping work on the project in November and plans to extend system to the NW.

Press Release 15Nov99
Press Release 23Aug99