gq: In 1935, in an annual birthday celebration interview, Tesla announced a method of transmitting mechanical energy with minimal loss over any terrestrial distance, a related new means of communication, and a method of accurately determining the location of underground mineral deposits.
Question: When did Tesla make these claims? Question: What did Tesla claim to be able to transmit? Question: How much energy loss did he expect would occur? Question: How far did he claim the mechanical energy could be transmitted? Question: What did he hope to locate underground?