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Maryland Mineral Resources


Maryland industry
Maryland industry

The most valuable minerals produced in Maryland are crushed stone, portland cement, and sand and gravel. Stone production includes the output of limestone, sandstone, marble, granite, and oystershell. It is used primarily for building construction, highway construction, and the manufacture of cement and concrete. Stone is produced in northern and western Maryland. Sand and gravel, which are also used primarily in construction activities, are produced mainly on the Western Shore. Some peat is still harvested from bogs in Garrett County in far Western Maryland, primarily for sale to home gardeners and farmers. Bituminous coal is mined in Garrett and Allegany counties in western Maryland. Although coal production declined after 1945, it rose sharply in the late 1970s and early 1980s due to increases in demand. In 2006 Maryland produced 4.6 million metric tons of coal.

Manufacturing


Manufacturing activities are concentrated in and around Baltimore. Other industrial centers include Cumberland, Hagerstown, Frederick, Salisbury, and Cambridge. Established types of manufacturing in Maryland include those for food products, chemicals, printing and publishing, primary metals, industrial machinery, and navigation equipment. The primary metals industry is concentrated almost entirely in the Baltimore metropolitan area, where steel, tinplate, aluminum, and other metals are produced. In addition, some steel is made in Cumberland, in western Maryland. Metal-processing plants along the shores of Chesapeake Bay and the lower Patapsco River utilize raw materials from distant sources rather than from Maryland mines. Iron ore for the huge steel plant at Sparrows Point, near Baltimore, is imported primarily from Venezuela and Canada. Scrap iron and steel are also used. Tin is imported mainly from Bolivia and Malaysia.

The manufacture of transportation equipment is also carried on mainly in the Baltimore metropolitan area. The shipyards at Sparrows Point and elsewhere in the area constitute one of the principal shipbuilding and ship-repairing centers in the United States. Fishing vessels and other small craft are built and repaired at numerous boatyards in the Chesapeake Bay area. Motor vehicles are assembled in Baltimore and nearby suburbs. Motor vehicle parts and railroad equipment are manufactured in the Baltimore area and in Cumberland. Aircraft are made in Hagerstown, as are heavy-duty trucks.

The production of foodstuffs is the most widely distributed manufacturing activity in Maryland, although much of such activity in the state is accounted for by the Baltimore metropolitan area. There are many small food-processing plants throughout the Atlantic Coastal Plain and Piedmont regions of the state. Food-processing activities include the production of beverages, bakery goods, confections, dairy products, meat products, fruit and vegetable products, and seafood. The output of chemicals and chemical products, electrical and nonelectrical machinery, search and navigation equipment, tin cans, steel tubing, and numerous other metal products is part of the heavy-industry complex centered on Baltimore. Electrical products manufacturing is represented by firms such as Black and Decker, headquartered in Towson, north of Baltimore. "Maryland" © Emmanuel BUCHOT, Encarta, Wikipedia

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