For example, a cargo of aluminum ingots, which were not packaged for shipment, would be heavy and dense, so the customary freight unit for aluminum ingots would be the long ton, a measurement of weight.
A cargo of aluminum ingots would be heavy and dense. This is for example. The customary freight unit for aluminum ingots would be the long ton. The long ton is a measurement of weight. A cargo of aluminum ingots were not packaged for shipment.