I posted this back in August, but as we near being current, perhaps we should review why we are invested here.


http://www.dredgingtoday.com/2010/09/08/sierr...perations/

Some highlights:

“The Allied concession incorporates approximately 38 river km. The black sand deposit in the river starts from the center of the river and extends approximately 1km east and west. The area, designated as the ‘strip,’ has an average of 3.5 kilos of black sand per square meter, extending to the bedrock."
"In addition to the known mineralized material that is within the 200 meter wide strip of river, there is an additional kilometer on each side of the strip which is also very rich in black sand."

So, trying to figure this out, theres two variables that we don't know, width and depth (if I am reading the above correctly). Let's assume the "strip" is 1m wide.
Length is 200m (200 m wide strip) + 2km (additional km per side) = 2200m.

2200m (L) x 1m (W) = 2200 sq/m

2200 sp/m x 3.5 kilos per sq/m = 7700 kilos black sand
7700kilos x 2.20 (1kilo=2.20lb) = 16940lbs
16940 / 2000 (lbs/ton) = 8.47 ton
8.47 t x $8421 (black sand value per ton per pr) = $71,325 value of black sands per 1m width.

If this "strip" is 100m wide = $7,132,500

If the "strip" is 1km wide = $71,325,000

Not sure if I am calculating this correctly, would apreciate anyone else taking a crack at it.