I am from Wau, in Papua New Guinea. I can obtain professional plans for a 3meter steel water wheel from https://www.waterwheelfactory.com in the US. Is there anyone in Australia who can supply such plans. I have a feeling that such technology will be very suitable for coffee pulping, rice hulling, oil expellers and flour milling in the PNG villages that do not have good road access. There are plenty of streams in this area and no roads. Some are only accessable by air and the planes will not carry kero or fuels, thus no lamps at night fot thousands of villagers.