Ukuze kuhlangatshezwane nemisebenzi eminingi kanye nezidingo, izimbobo ezengeziwe zihlelwa ebhokisini. Ibanga phakathi kwezimbobo lincane, indawo yokuklama ilinganiselwe, ukufakwa nokusetshenziswa kwegland akulula, ubunzima bokulungisa buyanda, ...
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