The principal exports are wines, cereals, olive-oil, cotton goods, soap, cigarette-paper, furniture and barrels, boots, shoes and leather goods, and machinery.
The city's principal manufactures are beet sugar, barrels and other cooperage products, wagons, carriages, sleighs and agricultural implements.
The nodules from the "blue earth" have to be freed from matrix and divested of their opaque crust, which can be done in revolving barrels containing sand and water.
In 1884; in 1883 the output was only L7,632 barrels, four years later it was 5,022,632 barrels, and in 1896 it was 23,941,169 barrels, or 39% of the total output in the United States.
For the next ten years, however, there was a decrease, and in 1908 the output had fallen to 10,858,797 barrels, of which 6,748,676 barrels (valued at $6,861,885) was obtained in the Lima district, 4,109,935 barrels (valued at $7,315,667) from the southeast district, and 186 barrels (valued at $950), suitable for lubricating purposes, from the Mecca-Belden district in Trumbull and Lorain counties.