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In page Sand smuggling in Southeast Asia:

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Currently there are no international conventions to regulate sand extraction, use, and trade,[1] which makes effective monitoring and law enforcement difficult.[2] The weakness of governance and law enforcement and rampant corruption have repeatedly been identified as facilitators of sand smuggling.[3][citation needed] Governments could reduce illegal sand mining by setting regulation and penalties, and by increasing patrols and monitoring in areas favorable for exploitation.[4]