This content is specified in Circular 33/2010/TT-BTNMT on exploration, classification of reserves, and resources of iron ore mines, issued by the Minister of Natural Resources and Environment of Vietnam.
Recently, the Ministry of Natural Resources and Environment of Vietnam issued Circular 33/2010/TT-BTNMT on exploration, classification of reserves, and resources of iron ore mines, including the regulations on the level of study and zoning of iron resource level 211, level 221, and level 331.
The level of study and zoning of iron resource level 333 is stipulated in Circular 33/2010/TT-BTNMT on exploration, classification of reserves, and resources of iron ore mines, issued by the Minister of Natural Resources and Environment of Vietnam.
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