Giant GOLD DREDGES make a comeback, Mongolian Dredge Fleet disproves drills |
Giant GOLD DREDGES make a comeback, Mongolian Dredge Fleet disproves drills |
Feb 14 2007, 04:16 PM
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Diggin' In! Group: Members Posts: 26 Joined: 14-February 07 Member No.: 990 |
Hi Folks - I'm a newbie here, usually on Alaska Gold Forum but lived in Mongolia since 1995. Then there was just one working dredge in Mongolia, and only a few dry mines. I've been documenting the placer gold rush since, now with 135 placer mining companies working 200 placer mines, and the Mongolian Dredge Fleet now has SIX large bucket line gold dredges and about 20 smaller bucket line dredges. I'm posting to share knowhow and ideas. And I am hoping someone will volunteer pics of the Snowstorm Dredge (especially its riffles) for me to include in the Tech Manual I've nearly completed for publication.
First I'll try and post some pics of the gold dredges to see if you folks are interested. If you want to visit them it can be arranged! We'll see how it goes - I would like to discuss PLACER DRILLING later on, as there is a systemic error that means understimation of gold reserves beneath wet floodplains. This error seems to be ignored in the USA and Canada, but please realise that the 6 giant Gold Dredges in Mongolia exist ONLY because the systemic error was corrected by the soviets just before the command economy collapsed. Enjoy the pics and realise that - if I'm right - then large gold dredges would be profitable in USA and Canada on placers formerly written off as subeconomic grades. cheers - Steppe |
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Jun 23 2007, 01:50 PM
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Diggin' In! Group: Members Posts: 26 Joined: 14-February 07 Member No.: 990 |
Hi CP - thanks for the link - tremendous information!
Mongolia's fleet of five large Siberian bucket-line dredges were originally all equipped with inclined flat bar riffles set on square-ribbed black rubber matting. Since then, several have been upgraded by installing new sluices consisting of large expanded metal MESH, still on square backed ribbed rubber matting. Unfortunately these are not as effective as they could be, being flexible MESH prone to buckle and warp up off the matting, rigid GRATING would have been better. Here are some unique pictures of sluices of one of these giant dredges, minutes after the new riffles were installed: Steppe |
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