About 10,000 ounces of gold, with significant by-product tin, was won from placer deposits by the 1960s.
In the 1860s, placer deposits of gold were found along the river, and a gold rush began.
First, the placer deposits found in Georgia meant that gold was relatively easy to collect.
About 200,000 ounces (6.2 tonnes) of gold has been produced from these placer deposits.
But the placer deposits worked in the early years were quickly exhausted, and production crashed.
Several placer deposits, two stamp mills and 27 mines were in the area of Thum.
Prospectors discovered rich placer deposits on the west side of South Park in 1859.
Once the placer deposits had been exhausted, an open pit gold mine was established in 1847 and commercial operations continued until the early 1980s.
The richest in placer deposits is the southern part of the krai.
By 1880, the placer deposits were exhausted and the land was down to hard rock.
Słownik geologiczny