Proof of early wireless

Last year British archeologists found traces of copper wire when digging holes of 10 ft
around London and concluded that GB had a telephone network operating 150 years ago.
Some months later American archeologists who dug holes around Boston found traces of copper wire at a depth of 20 ft and concluded that the US already had a telephone network operating 50 years before GB.
Shortly after that the Canadian Dept. of Mines and Resources released a report to the press that an amateur archeologist had dug several holes as deep as 30 ft around the Hudson Bay without finding any traces of copper wires; proof that Canada had already gone wireless 250 years ago.