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Drones reveal previously unknown features of Roman-era gold operations

Valentina Ruiz Leotaud | February 14, 2021 | 1:51 pm News Suppliers & Equipment Europe Gold 

Drones equipped with multispectral cameras are providing clues of the path followed by water canals dug 2,000 years ago in Spain to support Roman-era gold mining operations. The drones provide multispectral images whose different bands reflect the range of vegetation...

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