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Urban mining potential<br />

“Deposits” can be much richer than primary mining ores<br />

Primary mining<br />

13<br />

•<br />

•<br />

~5 g/t Au in ore<br />

Similar for PGMs<br />

Urban mining<br />

•<br />

•<br />

•<br />

200-250 g/t Au in PC circuit boards<br />

300-350 g/t Au in cell phones<br />

2000 g/t PGM in automotive<br />

catalysts

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