Helston Mines By Ben Sumpter 1361 Treeures Stream Works 1507 Nanfest Tinwork 1507 Castle Teen Herne Bounds 1515 Trewen Tinwork 1536 Roselyn Mine Period: 1568 to 1603 Tremenheere Mine 1650 Trenere Wollas Stamping Mill 1650 Trenere Wollas Blowing House 1650 Trenere Wollas Stamping Mill 1668 Wheal Pool Period: 1670 to 1680 Franchis 1695 Wheal Pidden 1711 Castle Wary Stream Bounds 1723 Frenches Work Period: 1723 to 1740 Tremenheere Mine 1724 Tremenheere 1724 Trevenen 1724 Wheal Trema Trout Bounds 1724 The Belial Period: 1724 to 1738 Wood Work 1726 Trevenen 1729 Trevenen Mine Period: 1732 to 1740 Trevenen Mine 1738 Trenethick Wood 1738 Wheal Pool Period: 1751 to 1761 Treworlis & Trenethick 1752 Trelubbas Wartha Stamping Mills Period: 1773 to 1825 Trenethick 1775 Crahan 1782 Trelubbas Wartha Blowing House Period: 1785 to 1796 Wheal Pool Period: 1791 to 1819 Wheal Franchis 1792 Lowertown Stamps 1793 Wheal Wood 1793 Nanceloe Tenement Period: 1793 to 1798 Wheal Ann 1798 Marr Mine Period: 1798 to 1809 Trenethick Wood Period: 1800 to 1825 Trenethick Period: 1800 to 1804 Wheal Pool Period: 1801 to 1812 Trenear Stamping Mills Period: 1801 to 1816 Trevenen Mine 1804 Wheal Valls Period: 1805 to 1830 Wheal Ann Period: 1807 to 1811 Wheal Providence 1809 Coverack stamps Period: 1810 to 1839 Wheal Trumpet 1812 Wheal Jane 1814 Wheal Nancy 1816 Trenear Scoff Mill 1816 Trenear Moor Tin stream Period: 1816 to 1818 Tremenheere 1819 Treloquithack Stamping Mill 1819 Wheal Noon Period: 1819 to 1824 Roselidden Tin Mine Period: 1819 to 1826 Silver Hill Mine 1820 Trenethick Mine Period: 1820 to 1821 Nancequithack & Treloquithack Stamping Mill 1821 Trevenen Mine Period: 1821 to 1822 Nancequithack Bounds Period: 1823 to 1832 Wheal Union Period: 1824 to 1825 Wheal Freedom Period: 1825 to 1826 East Trumpet Mine 1826 Wheal George & Wheal Fredrick 1828 Nanceloe Period: 1828 to 1829 East Trannack 1829 Castle Wary 1830 South Wheal Trumpet Period: 1830 to 1844 Wheal Ann 1831 Wheal Trumpet & Wheal Trannack 1832 Trenethick Wood Period: 1832 to 1833 Castle Wary Period: 1834 to 1835 Nancequithack & Treloquithack Period: 1834 to 1836 Higher Trelubbas Stamps Period: 1834 to 1838 Trevenen Period: 1835 to 1838 Wheal Whiddon Period: 1835 to 1839 Wendron Royal Mining Company Period: 1836 to 1840 North Trevenen Mine 1837 Trevilgey Period: 1837 to 1839 South Wheal Pool Period: 1837 to 1845 Trenear Moor Period: 1838 to 1845 Wheal Henry 1840 Treloquithack Moors 1840 Wheal Trevenen Mine 1840 Crane Mine 1840 Wheal Caudle Period: 1840 to 1841 Wheal Dream 1841 Trevenen Mining Association Period: 1844 to 1848 Wheal Ann 1845 Roselidden Moor Period: 1846 to 1881 Trumpet Consols Mine Period: 1847 to 1848 Higher Trelubbas Stamps 1848 Gwealhellis & Gwealfolds Period: 1848 to 1860 Chenhayle Tin Stream Period: 1848 to 1851 Wheal Ann Period: 1849 to 1854 Wheal Oak Tin & Copper Mining Company 1850 Wheal Roots 1850 Wheal Henry Period: 1850 to 1851 Wheal Pool 1851 Trenear Tin Mine Period: 1851 to 1855 Wheal Pool Period: 1852 to 1856 Trevenen Tin Mine Period: 1852 to 1854 Treworlis & Trenethick Mining Company 1853 Crenver Bottoms Period: 1853 to 1856 Wheal Freedom Period: 1854 to 1855 Trenear Stamping Mills Period: 1854 to 1856 Wheal Union 1855 Wheal Freedom Period: 1855 to 1860 Wheal Pool Silver, Tin & Lead Period: 1856 to 1877 Trevenen & Tremenheere Mining Company Period: 1858 to 1882 Helston Streamworks Period: 1859 to 1860 East Trevenen & West Lovell Period: 1859 to 1873 Treworlis Mine 1860 Crahan Mine Period: 1860 to 1861 East Trevenen Mine Period: 1860 to 1870 New Trevenen Mine Period: 1860 to 1875 Trumpet United 1862 Wheal Pool 1863 North Wheal Trumpet Tin Mine Period: 1863 to 1864 East Trevenen Mine 1865 Nanceloe & Nanceloe Wollas 1865 Wheal Pool Period: 1867 to 1878 East Trumpet Mine Period: 1868 to 1869 Higher Trelubbas Stamps Period: 1868 to 1870 West Trumpet United 1869 Loe Pool Stream Works Period: 1869 to 1886 Tremenheere Mining Company Period: 1871 to 1874 Trumpet & Trenethick Mine Period: 1871 to 1873 West Trumpet 1872 Loe Pool 1872 Loe Valley Tin Stream Period: 1872 to 1881 Treworlis Mine Period: 1876 to 1886 New Trumpet & Lovell Mines 1881 New Trumpet Consols Mine Period: 1881 to 1882 New Trumpet Consols Mining Company Period: 1882 to 1889 New Trumpet Consol Mining Company Ltd 1893 Trenear Stream Works 1893 Trenethick Tin Stream 1893 Wood Stamps 1893 Gwealhellis Tin Stream 1898 Wheal Valls 1908 Treworlis Works 1910 Loe Pool & Streaming Sett 1910 Loe Pool Period: 1912 to 1921 Geri River Tin Mine, Ltd Period: 1912 to 1928 Helston Valley Tin Company Ltd 1920 Trumpet Mines Ltd 1920 Cornish Properties Development Company Ltd Period: 1929 to 1930 Loe Pool 1978 Poldark Mine