Professor DeLaurier’s paper discussed the existence of a structure so vast that it defied imagination—a quasi-cylindrical loaf of an object measuring 65 miles long by 65 miles thick at a staggering depth of 80 miles. The huge structure had been detected by seismic equipment located at Alert, one of the U.S.-Canadian Distant Early Warning (DEW) stations in the Arctic wilderness. Studies showed that the object, which straddled the earth’s mantle and crust, was the source of some sort of disturbance—similar to the situation encountered at Lake Vostok 30-odd years later—affecting the magnetic field at the Alert facility and “inducing a strong flow of electricity.”

I haven't had any luck finding this "paper". Someone have the time to try and find it? It could fill a big gap in this story.