Once the Jews had been deported to German concentration camps, the valuables were sorted into categories such that their owners could no longer be identified.
To prevent the laundering of gold and other metals (such as tantalum, tin, and tungsten), some nations have established systems and regulations.
For example, Rwanda introduced regulations for mineral trade that require all ore extraction to be tagged, in part a response to the Dodd–Frank Wall Street Reform and Consumer Protection Act in the United States that requires companies to disclose the use of conflict minerals by publishing a supply chain audit.
[11] In 2013, Ghanaian President John Dramani Mahama announced that the government of Ghana would establish a task force to regulate the small-scale mining sector.
[3] This was to ensure that gold produced in small-scale mines could be authenticated, and also to eliminate the use of heavy machinery that had become prevalent on such sites, which have caused environmental damage.
[3] The government of Uganda obtained $200 million in trade revenue from the sale of gold in 2012, but expects that to decrease in 2013 as a result of illegal mining operations.
[12] The group InSight Crime claims that illegal mining represents up to 30% of the revenues of the Revolutionary Armed Forces of Colombia (FARC).