A bund (40) is formed, according to this invention, by moulding bund sections (35) in a bund mould (30) which may be placed on the ground to receive and consolidate material in the cross-sectional shape of the required bund (40). After forming a short bund section (35) the bund mould (30) is repositioned to form a continuation of the formed bund section (35), refilled to form a further bund wall section (35) as a continuation of the previously formed bund section (35) and this process is repeated until the desired bund is formed.
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