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US officials consider robots to prevent mine spills

Valentina Ruiz Leotaud | February 04, 2018 | 9:35 am Precious Metals Gold 

It looks like a hybrid between a golf cart and Wall.E. Its main function is to move through collapsing, rubble-strewn tunnels at mine sites to map them and analyze pollutants in groundwater. It can do what humans cannot: penetrate thousands...

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