the elements being rotary ground-penetrating elements

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Defence installations; Defence devices (constructional aspects see Section E, e.g. E04H9/04; ) > Means for clearing land minefields; Systems specially adapted for detection of landmines > Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles > with ground-penetrating elements, e.g. with means for removing buried landmines from the soil (F41H11/18 takes precedence) > the elements being rotary ground-penetrating elements