article_snippet: Scroll down for video .
article_snippet: We have studied records and spoken to people from the time. '
article_snippet: The local authority have given Karl-Heinz and Karl-Heinz four friends permission to dig in the Nazi structures and a local building firm has loaned his four friends permission to dig in the Nazi structures some heavy drilling equipment. '
article_snippet: I can't reveal who our sources are, but our are not doing this for fun,' Karl-Heinz added. '
article_snippet: Others have been just as certain in the past.
article_snippet: Everyone had a different theory of what might have befallen the work.
article_snippet: an American team also say the Cyrillic lettering on the remains of a wooden crate an American team found, bearing the words 'fragile' and numbered could mean the words 'fragile' once contained a piece of the Amber Room jigsaw.
article_snippet: But the lake has yielded little since WW2, except for forged £5 notes which were printed by the Nazis and intended to cause chaos for the British economy.
article_snippet: Ulbrich interviewed foresters, policemen, miners and old Nazis for Ulbrich work which chronicles two decades of largely unreported quarrying in the wood near Zwickau.
article_snippet: he and Gluba, and others, have still not managed to access It.
article_snippet: Americans liberated It and US authorities have since classified all 1945 documents relating to Ohrdruf for a minimum of 100 years. '