Mining exploration and mineral exploration in the field of gold; mineral extraction of precious minerals, namely, gold; refining and processing of precious minerals, namely, gold

Marking of raw materials, namely, metals and metal ores, minerals, namely, conflict minerals, diamonds and precious stones, during or after mining, by inserting or applying other materials to the aforementioned raw materials, diamonds and precious stones, for the purpose of encoding information; marking of products comprising raw materials, namely, metals, metal ores, minerals, conflict minerals, diamonds or precious stones, during or after production, by inserting or applying other materials...