Boobyalla Tin Mine
The tin mine in the photograph owed its discovery to George Renison Bell who discovered tin in the Boobyalla river in 1874. Part of the tin extracting process is shown. A gravel pump is sucking feed material up a pipe to what was called the head box. Any unwanted material would be discarded and the remainder would enter a long wooden tray known as the sluiceway. Small pieces of timber called clears, set about one metre apart in the sluice, caused heavy material to bank up behind them. Because the tin was heavier than the rest of the material, it would drop to the bottom of the sluice and after more washing would be extracted. From there it would be bagged and sent away by pack-horse.
Notice the materials from which the sluice has been made, and the machinery, timber and the workers' hut shown in the picture.

Photograph number 28 of 50 - Boobyalla Tin Mine (1904)
Photograph and text taken from "Photoprints Early Northeast", published by the Tasmanian Education Department, 1980