Using AEMP-14 (former NEMFIS) GeoScanner to find small metal objects

Landviser, LLC is offering advanced equipment for multi-frequency electromagnetic sounding and profiling - AEMP-14 - manufactured by KB Electrometry Ltd in Novosibirsk, Russia.
AEMP-14 is a patented device for 10-m depth earth sounding that comprises a transmitter, two receiver coils, and a backing coil. This device can operate at a set of operating frequencies picked up from 14 available frequencies (within the range from 2.5 to 250 kHz). The arrangement of receiver coils cancels the primary field in air by a factor of 1000, so there is no need for preliminary calibration for a specific ground.
An operator equipped with the scanner AEMP-14 can perform the following jobs for underground space: search of ferrous and nonferrous metal objects, large cavities in soil, big ceramic and plastic bodies, underground structures, tunnels, groundwater, and everything that has a different specific conductivity to the rest of underground space.
The AEMP-14 scanner is engineered for simple and robust operation. It is possible to choose one of three modes of survey:
line;
map;
GPS tracking.