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This , coupled with abundant exportable supplies in other major exporting countries , is expected to result in U.S. exports falling 3.0 million tons to 27 million . Today , minerals are extracted and consumed in enormous quantities : in 1999 , some 9.6 billion tons of marketable minerals were dug out of the Earth , nearly twice as much as in 1970 . The six-member California Integrated Waste Management Board is responsible for protecting public health and safety and the environment through management of the estimated 68 million tons of solid waste generated in California each year . World wheat trade in 2000/01 is estimated at 105.1 million tons , down 3 million from last year . American exports of soybeans to the European Union plummeted from 11 million tons in 1998 to 6 million tons last year , while American corn shipped to Europe dropped from 2 million tons in 1998 to 137,000 tons last year : a combined loss of nearly one billion dollars in sales for American agriculture .