You searched for: “electromagnetic surveyings
electromagnetic surveying (s) (noun), electromagnetic surveyings (pl)
A method of prospecting below the surface of the earth: The process involves the use of electromagnetic surveying during which the use of electric current waves on the top level are utilized to penetrate into the soil and to indicate if there are any new ores down below.

Such electromagnetic surveying can determine if there is gold, silver, or other metals by finding them and then recording their existence to those who are looking for the minerals.

This entry is located in the following units: electro-, electr-, electri- (page 42) super-, supra-, sur- (page 1)