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Born in 1866, Jensen was the son of a knife grinder in the town of Raadvad just to the north of Copenhagen. Jensen began his training in goldsmithing at the age of 14 in Copenhagen. His apprenticeship with the firm Guldsmed Andersen, ended in 1884, and this freed Georg to follow his artistic...

John Johnson was born at Saco, Maine, U.S.A. in 1813. He was brought up in New Hampshire and, for a time, worked as an assistant to a jeweller and watchmaker in New York. He formed a business partnership with Alexander Simon Wolcott (1804 -1844), a New York instrument maker.

1839 was the year...

In 1526 Kamiya Jutei, a wealthy merchant from Hakata, founded the Iwami Ginzan Silver Mine in Ōda. In 1533 he introduced a Korean method of silver refining to the mine, which became the Hai-Fuki-Ho method.

Historians compared the Hai-Fuki-Ho method to the Medieval European seigerprozess [de] of...