tin ore उदाहरण वाक्य

उदाहरण वाक्य

1. They were made redundant with the introduction of explosives, although hydraulic mining is still used on alluvial tin ores.
2. Tin Creek and Cassiterite Creek, about south of Brooks Mountain, have tin ore deposits in tourmaline and garnet rocks.
3. Other forms of tin ores are less abundant sulfides such as stannite that require a more involved smelting process.
4. The tin ore was heated and the tin flowed into cast iron crucibles where it was re-heated to remove impurities.
5. The production figures for copper 1845 1864 and for tin ore, 1855 1864, are given in " Cornish Mines ".
6. In 1987 cassiterite ( tin ore ) crystals in a stream in the Taurus foothills were found by the MTA geologists.
7. There is no natural copper or tin ore in Norfolk so all raw materials must have been imported, probably by trading.
8. During the following two decades, Hochschild built up an economic empire in Bolivia around the mining and trade of tin ore.
9. Early modern'crazing mills'powered by water, such as that which existed at Penventon, were built to grind, and later stamp the tin ore.
10. Tin ore was plentiful in Lukut, an area within the Port Dickson district, during the 1820s, and it attracted Chinese immigrant miners.