Type of soil

Materials tested

Height of test

Operating speed or frequency

Performance

Reference

Clay and air

Valmarave VS50 anti personnel mine

17-19-20-21-23 cm above the ground

3990 - 23,970 Hz

On the surface, just under the ground

[40] [42]

Sand

TS-50 and MAI-75 anti personnel mine

Several cm above the ground

300 Hz - 90 KHz

5 cm

[39] [41]

Sand

Anti personnel mine (high and low metal content)

Anti tank mine (high and low metal content)

Just above the ground

330 Hz - 90.03 KHz

0 - 7 cm

2.5 - 12.5 cm

[43] - [45]

Sand

Bakalit PT Mi-Ba III anti tank mine

Just above the ground

1 - 2 GHz

10 cm

[46]