Operation of gold, silver, copper, zinc, and manganese mines, namely, mining extraction of gold, silver, copper, zinc and manganese; and development of gold, silver, copper, zinc, and manganese mining projects in the nature of mining extraction services

Zinc ores; zinc concentrates, zinc metal and its alloys; copper ores; copper concentrates, copper alloy ingots; copper metal and its alloys; manganese ores; manganese ingots; manganese alloys