A hybrid coaxial cable network employing interdiction to ensure privacy in telephony communications. Also disclosed are methods of plating such tin or tin-alloys on substrates, such as the high speed tin plating of steel. An ion source that does not require a radioactive source to operate can use the photoelectric effect to produce electrons. Time-of-flight measurements of pulses passing through the two phase fluid are made. Non-volatile storage elements that have not reached the intermediate verify threshold continue programming. A thickness of at least a portion of the second regions is thicker than a thickness of the first regions.