1.   Gem mining and logging at Pailin is a major source of revenue for the group.

2.   The major businesses conducted by Thai companies in Khmer Rouge territory are gem mining and logging.

3.   But it still faces the problem of how to deal with the links between private Thai businessmen and the Khmer Rouge particularly in forestry and gem mining.

4.   One that runs the length of the country as well as coffee farming, gem mining and power plant construction.

5.   One that runs the length of the country, as well as coffee farming and gem mining.