At least two iron ore cargoes from the world's No.4 supplier Fortescue Metals Group are facing unusual customs delays at north China's Caofeidian port due to inspections for solid waste, sources with knowledge of the matter said. The cargoes were in two shipments totalling roughly 400,000 metric tons, the sources said, worth around $55 million, though only the portions earmarked for portside sale by Fortescue after arrival face delay, while volumes already sold were little affected. One of the partial cargoes has been delayed at Caofeidian, among China's busiest for handling the key steelmaking ingredient, since December, while another arrived this month.