Lignite from Sasso Forte
before 1874
before 1874
1843-1889
before 1866
before 1866
1843-1889
1843-1889
1843-1889
1843-1889
1843-1899
1843-1889
before 1874
before 1878
1843-1889
1843-1889
before 1875
1843-1889
before 1865
1843-1889
before 1871
1843-1889
1843-1889
1843-1889
before 1873
1843-1889
1843-1899
1981-1990
before 1868
1843-1889
1831-1850
before 1861
1860
before 1864
1843-1889
1843-1889
before 1862
before 1864
before 1862
1843-1889
1843-1899
1843-1889
1843-1889
before 1874
1843-1889
1843-1889
before 1874
before 1875
before 1874
1843-1889
before 1874