Mekong River Sand Sale Sparks Toxic Heavy Metal Fears in Chiang Rai
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Mekong River Sand Sale Sparks Toxic Heavy Metal Fears in Chiang Rai

Concerns over toxic heavy metals have arisen in Chiang Rai regarding the sale of sediment dredged from the Mekong River. Authorities assure it's old material and safe, proposing independent testing for transparency.

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