A multi-reflector antenna array capable of simultaneously transmitting and receiving communication signals at Ku-band frequencies is mounted on an exterior surface of an aircraft. Out of all the notes contained in the selected span, the number of notes that fall on the intrinsic notes of a tonality is counted with respect to each of the tonalities. Any pages that are not contributed to the pool of contiguous physical memory, are not allocated with other pages that are contributed to the pool of contiguous physical memory, can be freed from allocation for alternative uses. Lists of top moving securities identified by calculation of security momenta comprising differences between a current time and tick times, the differences being summed. The plant includes a plurality of gas injection lances to inject the oxygen-containing gas into the vessel that extend downwardly through openings in a side wall of a direct smelting vessel. The ASIC, the one lens, and the one EMR source are all enclosed in a single housing providing accurate optical alignment of these elements and integrated as a single replaceable module.