
Graphite Electrode
2022
2022
1960-2003
1878-1890
1980-1982
1956
1997-2007
1997-2007
1956
1935-1960
1970
2020
1977
1956
1841-1900
1980-1982
circa 1711
1857
1856-12-28
1857
circa 1930s
1980-1982
1701-1800
2020
2020
2020
1880-1886
unknown date
1841-1900
1795-1825
1750-1900
1863
1980-1982
1970-1981
1948
1992-1993
1997-2007
1936-7
1997-2007
circa 1860
unknown date
circa 1963
1920
Sunday 4 January 1835
1982
1982
1982