The foundation-stone of Messrs Schneider & Co/s Smelting Works, at the Burra Burra Mines, was laid on Monday week, by William Giles, Esq., Manager of the South Australian Company. The Smelting Company have commenced conveying materials by the new route from the head of St. Vincent’s Gulf to the Burra Burra. The road and port have been found practicable, and ores are now conveyed to Port Adelaide by this route.