I don't know where you got those # but 1 lb or 14.5 troy oz of Au (gold) from 1000 lb of MoBo sounds Nutz.:confused:
My research and discussions with several refiners would indicate a much lower yield from green MoBo and even less from rainbow boards. Based on yields from 2011 published by one of words leading smelters they were getting 180 grams or 5.7871troy oz of Au from a metric ton of green moBo. So your 1k of MoBo would yield only 2.625 troy oz or $4672.5 based on London fix of $1780.
Now consider that it would take a straight load of of 40,000lbs of Mobo ($162,000) to make it profitable enough to cover the cost associated with having your material processed you also have to wait 120 days on your money. Also the one refining is always risking a lower yield as no 2 assays are the same and there are penalties for too much Be or Ni ect. I'll continue to sell to a broker like E-Wasted and get a guaranteed price up front Thank You Very much.
Published yields from Umicore:
Be 0,001 %
Organics 25 %
SiO2 18 %
Al2O3 10 %
Fe 6 %
Ni 0,8 %
Cu 17 %
Pd 80 ppm
Pt 1 ppm
Au 180 ppm
Ag 800 ppm
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