In the processing of gold by small-scale miners, gold extraction by amalgamation, which makes use of mercury during gold smelting, was highlighted. During gold smelting, an estimated 26 tons of mercury are dumped annually into bodies of water in Mindanao alone, posing serious environmental and health risks to people.
http://www.businessmirror.com.ph/lopez-not-keen-on-approving-new-minahang-bayan-sites-this-year/
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