In 1964 a radiocarbon date put the statue's age at 350 years old.
The available radiocarbon dates suggest that mining may have taken place over a period of between 500 and 1,000 years.
This interpretation cannot be maintained in the face of radiocarbon dates.
Four radiocarbon dates show the site, known as Dereivka, to be 6,000 years old.
Not enough carbon remained for scientists at the time to extract a radiocarbon date.
Radiocarbon dates indicated a use-life of between 200 and 500 years.
In addition to the research done at the site, Walker's team also had radiocarbon dates run on newly found artifacts.
From these deposits, nearly 175 radiocarbon dates are available.
The radiocarbon date of approximately AD 1300-1400 is in line with this.
A single radiocarbon date for Harwood suggests it was also occupied in 1450.