Underground Railroad secrets revealed with drones, lasers and radar

[admin]

Archaeologists and historians have uncovered new clues about the Underground Railroad and the people who risked their lives to escape enslavers in 19th-century America.

Underground Railroad secrets revealed with drones, lasers and radar : Read more

 

[jinji]

I now have a question about radar, we want to buy some for our company, and it would be very cool if professionals would advise the best in the medium price range. Right now we are leaning towards getting a similar ground penetrating radar https://geotechru.com/. What do you think, is it good?