These massive creations usually weigh around 12.5 tonnes (13.8 tons) each. Displacement is usually measured in units of tonnes or long tons. It had a payload of 24 tonnes (26.4 tons) in various configurations. It is measured in kilograms or tonnes. They have a gross tonnage of around 137,000 tonnes. The airport is capable of annually handling 1.5 million passengers and 6,000 tonnes of cargo. Of the total marketable output of industrial minerals of 40 million tonnes (excl. This is equivalent to the replacement of 10 million tonnes of petroleum. Mt/a (million tonnes per year), approximately half of which was produced in the United States. Soybean oil came in second with 37 million tonnes (23%). The storage area was a large concrete box capable of holding 75,000 tonnes of coal. India exported 254,841 tonnes or 20% of their total production. Production peaked in 1963 at 82,000 tonnes per year. These changes caused a weight increase to 59.2 metric tonnes. Kilns of 1000 tonnes per day output are typical.