Exploration should be a long-term endeavor - like research

IMDEX/Cascabel's "Un-Official Directory"
Compaņias Activas 2001-2005
Pacific Comox Resources Ltd.

Pan American Silver Corp. (includes Corner Bay as of 21Feb03)
Pancho Villa Gems

Pediment Exploration Ltd.
Peņoles is listed under full name Industrias Peņoles
Phelps Dodge Corporation (includes CyprusAmax Minerals as of late 1999)
Placer Dome Inc.
Planet Exploration Inc.
Playfair Mining Ltd.  (Formerly Layfield Resources Ltd.)

NOTE: companies listed with strikethrough appear to be presently inactive in Mexico based on lack of any Mexico-related press releases in last couple of years.

Compaņias Dormidas, que se fueron ķ totalmente muertas
Pacific Amber Resoures Ltd.  (now active in oil & gas sector) 
Pacific Rim Mining Corp.  (active in El Salvador and Nevada) 
Panther Resources Ltd.  (Formerly Golden Panther Resources Ltd.)
Pierre Enterprises Ltd.  (Formerly Carmelita Resources Ltd.)
Premier Diamond Corp.  (Formerly Premier Minerals Ltd. now just diamonds)
President Mines  Ltd.  (changed name to Otish Mountain Exploration Inc.)
Primo Resources International Inc.  (Formerly Primo Resources Ltd.)
Probe Resources  (now Greenwood District, BC, nada in Mexico) 

SEDAR's complete "P" list of Canadian Public Companies
(quickest route to archive of public company's documents)

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