Kaolin clay for manufacture. ind. ceramics and manufacturing concrete blocks and bricks.
Metallic ores. Mining activities. Metallic ore extraction.
Water drilling and supply arrangements. Supplier of river sand, gemstone. Prospection and geological exploration. Research and mining explor....
Mining activities.
Research and mining exploration. Environment services. Design and research in metallurgy.
Mining activities. Nonferrous ores.
Specialized company in the processing and recycling of mining and exploitation of gold and....
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