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2007). A radiocarbon date of 6300 +/- 100 BC (roughly 7350 BC in calendar years) was obtained from a hearth associated with this point at the St. Albans site in West Virginia (Broyles 1971), and Chapman (1975) suggests a similar age for the LeCroy complex at the Rose Island site in Tennessee.
The New Pinafore, the last of the larger mines, closed in 1908, and commercial exploration of the field ceased in 1914. In all the Lefroy mines yielded Â£750,000 in gold, making the gold field the second richest in Tasmania, after Beaconsfield. Chinese miners first arrived at Lefroy in 1870.They were originally brought in to work the mines at Back Creek.he history of mining at Lefroy is one of a series of booms and busts. The alluvial gold lay in the creek gullies and under the basalt rock on the eastern side of the field. But most of the gold lay in scattered reefs in the quartz rock which formed the base of the area.