Model of an open-pit mine in the Trat areaThe pictures in the following slide presentation are © 1991 J. Wolf Kuehn and cannot be retrieved by any means.
Model of an open-pit mine in the Trat area
Geological formation of a gem deposit
A visit to the local market is a great experience.
During the monsoon season shopping is best done without shoes!
MEXICAN OPAL SAFARI - A visit to an opal mine in Querétaro, Mexico
GEM MINING IN SRI LANKA - An exciting trip to the gem mines.
SOUTH SEA PEARL PRODUCTION - A visit to a South Sea Pearl Farm
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