| http://www.w3.org/ns/prov#value | - 24(4) The board, except as herein otherwise provided, as respects the attendance and examination of witnesses, the amendment of proceedings, the production and inspection of documents, the enforcement of its orders, the payment of costs, and all other matters necessary or proper for the due exercise of its powers, or otherwise for carrying any of its powers into effect, has all such powers, rights
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