Brian, they would take the thickness of the deposit then multiply that by the area indicated, then multiple  that by the average grade, more or less. I am working from memory here (last in ecuador in 1994) and I didn't quite make it is as far downriver  as their location, but judging from the pictures on their web site, I would say they are located at the between the Amazon lowlands and  the Andes mountains, where, because of the lower gradient, and lot of material would be dropped out of the slower current, depositing quite a lot of material. This is obvious, even by looking at a map of the area. Maps of the area are  available in Quito from the Institute Geographico Militare (spelling might be off) for small fees. I have decent maps  of the whole area, quite a treat for me to find a company in "my" area. Have looked up other ecuadorian exploration cos- most of the lode mining and exploration is located in southern  Ecuador, there is in the south, an interesting "wild west" type town called Nambija, completed with brothels, gold traders, and sticks of dynamite you can buy for $3.  So, as far as I know (little) there are no other companies  active in the area. Tour operators in Tena, the nearest town, can take you  gold panning in the local rivers, if you want. You are only one day from the capital, Quito. The great Inca treasure is rumoured, with some historical support, to be hidden in the mountains close to this company's operations, in the mountain range called the Llanganates. Albert |