???? ????? ????? ??? ??????? ?? ???? ????????? ???????? ?? ?????? ?????? ????? ????? ?? ?????? ?????? ????? ?????.???? ????? ?????? ???? ?????? ??????? ??????? : ???? ??? ????? ??????? ??????? ???????? ?? ??????5.600 $ The most well-known unit in the world and also the most generally employed by prospectors for gold and valuable metals underground