China, the world's biggest importer of most major commodities, has already made several attempts to stall a surge in prices for everything from iron ore to coal.
Country is considering longer-term measures to grab a bigger slice of mining companies’ profits once a temporary export tax finishes at the end of this year.
Wind-transported metal pollution from mining paired with activities linked to the tourism industry are causing concern to those that depend on the Khumbu Glacier melt.