St Austell Bay

Marine Alluvial Dredging for Tin

Indonesia is the World’s largest tin producer country with the majority of their production of circa 75,000mt per annum coming from dredging drowned beach terraces at sea off the islands of Bangka and Belitung. Similar deposits are found off the coast of Cornwall but have never been exploited.

1980's Work in St Austell Bay

Previous work by Billiton Exploration in the early 1980’s identified over 20km of channels, with an average width of 200m within St Austell bay. These channels are the courses taken by the rivers Par and Pentewan during the last ice age when sea levels were up to 120m below current levels. These two rivers are two of the most productive and heavily exploited resources of alluvial tin to be mined on-shore in Cornwall. Some limited drilling was undertaken by Billiton just prior to the 1985 tin crash, giving grades of between 500ppm and 4000ppm tin in the basal gravels. Economic grades in Indonesia can be as low as 150ppm so these channels represent an attractive exploration target with the potential for +15,000mt contained tin.

Licence Application and Proposed Work Programme

In the UK the sea floor is owned by the Crown Estate. Treliver has been progressing a licence application for this area over the last 18 months and expects an exploration licence to be granted in Q2 2015. This will be followed by a geophysics survey to accurately map the palaeo-channels in 3D and then by the taking and analysis of a bulk sample

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20KM
of Channels

Grades between
500ppm and
4000ppm tin

Potential for
+15,000mt
contained tin
Project Locations

I am extremely pleased that we have been able to report resource estimates for the Tellerhauser project in accordance with the 2012 JORC Code & Guidelines. This resource now sits as one of the largest undeveloped tin deposits in the world and also boasts one of the highest tin equivalent grades. Tellerhauser is also the largest and highest grade indium deposit reported in accordance with 2012 JORC guidelines in the world. Our aim now is to increase the category of estimation by collecting underground samples to confirm the previous assaying.

Mark Thompson - Treliver's Chairman

Unit 2 Hurling Way, St. Columb Major Business Park, St Columb, Cornwall, TR9 6SX   |   Tel: +44 (0)1637 889 341 |   Email: info@treliverminerals.com
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