“…Inductive electromagnetic methods have found many applications such as, archaeology (Tabbagh, 1986;Bevan, 1991;Dalan, 1991;Clay, 2001;Gomes, 2003;Venter et al, 2006;Rodrigues et al, inpress), precise agriculture (Corwin and Lesch, 2003;Oliveira et al, 2005), mapping of metallic piping (Borges and Porsani, 2003;Carpenter and Deignan, 1993;Cisar et al, 1993;Maclean et al, 1991;McNeill, 1980), and soil salinity (Bennett and George, 1995;Triantafilis et al, 2000), among others. Theoretical basis to this method can be found in (Keller and Frischknecht, 1966;McNeill, 1980;Telford et al, 1990).…”