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Hi, today I will recycle the contacts that my good friend Alexander gave me... The contacts are different and require different methods of preparation, which I showed... and of course, the processing of contacts, with melting Well, look at what I got... Acid consumption Nitrogen 320 ml. Electrolyte 150 ml. salt 3 spoons of boiled water 4 teapots a little patience..... and I got 31 grams of SILVER Let's look and evaluate