(i) Its internal walls, oor and roof shall be continuously lined with corrosion resistant metal or other approved impervious suitable material.
6041 35 (i) Iindonga zaso zangaphakathi, umgangatho nophahla zizakuqukunjelwa ngesinyithi esingadlekiyo okanye enye imatiriyeli efanelekileyo engangenwa nto.