Nodules of iron from foundry reclamation
1970-1990
1970-1990
1780-1869
1927
1890
1953
1934-1936
1801-1900
1911
1975
1977
1880
1931
1900
1890
1928-1933
1800
1850
1929
1910
1880
1920
1960
1930-1932
1930-1932
1850
1954-1956
1948-1960
1930
1940
71-100
300 BCE
1930-1932
1930-1932
1930-1932
1930-1932
1914
1895-1905
71-100
71-100
71-100