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　　                  第六章附則

    第九十一條對于冶金、建材、化工等行業(yè)尾礦庫等別的確定，應(yīng)根據(jù)當時的全庫容及壩頂高程水平面以下的庫容和壩高分別按第五十七條尾礦庫等別表確定。當兩者的等差為一等時，以高者為準；當?shù)炔畲笥谝坏葧r，按高者降低一等。尾礦庫一旦發(fā)生事故，將使下游重要城鎮(zhèn)、工礦企業(yè)或鐵路干線遭受嚴重災(zāi)害者，其等別可提高一等。

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