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If you mix nitric acid and table salt, you can easily dissolve gold. This new method of mine is well suited for extracting gold at home! If you have problems with purchasing hydrochloric acid, then this is an option. But I will not dwell on this alone, also, I have other interesting ideas in mind. And what are they? You will see in future releases. And in terms of cost, this method is quite an acceptable option, and in terms of efficiency, it is also not inferior to the king. My experience shows that the mixture does not necessarily need to be heated much, it is enough to put it in the sun and wait. In the summer, one day is enough to dissolve all the minerals contained in the stones or in any potential ore.