V1749 - ICWCP / Tailings Thickening / Tailings Concentrate Thickener / Coal Concentrate Thickening Cyclone A / Concentrate Thickening Cyclone A Inlet Valve / Instrument Air Isolation Concentrate Thickening Cyclone Inlet Valves FV4-13A.1, 13B.1, 13C.1 & 13D