4'/Maryland Manual
5.6 percent. Non-agricultural workers (in thou-
sands, with percentage of total): Manufacturing—
durable goods, 133.0 (8.4); non-durable goods,
108.1 (6.8). Non-Manufacturing—services and
mining, 317.3 (19.9); retail trade, 298.6 (18.7);
State and local government, 251.9 (15.8); federal
government, 131.1 (8.2.); contract construction,
102.5 (6.4); finance, insurance, and real estate,
85.6 (5.4); transportation and utilities, 84.6 (5.3);
wholesale trade, 80.0 (5.). Total non-agricultural
employment, 1,593.6.
Manufacturers, 1977. Number of establishments,
3,923; total employees, 241,900; total payroll,
$3,407,100,000; total value added by manufactur-
ers, $7,108,700,000. Most important manufac-
tures: food and kindred products; primary metal
products; electric and electronic products; trans-
portation equipment; chemical and allied prod-
ucts; and machinery (except electrical).
Selected Industries. Maryland's ten largest em-
ployers: Bethlehem Steel Co.; C & P Telephone
Co.; Westinghouse Corp.; Baltimore Gas & Elec-
tric; Montgomery Ward & Co.; Giant Food;
Sears Roebuck & Co.; General Motors; Western
Electric; Marriott Corp.
Agriculture, 1979. 16,400 farms covering
2,780,000 acres. Total farm receipts $770,000,000.
Most valuable farm products: broiler chickens,
$261,000,000; field crops, $179,426,000; dairy
products, $171,665,000. Most valuable crops:
corn, $71,610,000; soybeans, $48,547,000; tobac-
co, $32,525,000. Workers on farms, 32,000.
Mineral Production, 1977. Stone, 16,736,000
short tons, value $49,772,000; sand and gravel,
11,702,000 short tons, value $29,562,000; bitumi-
nous coal, 3,280,629 tons, value $82,075,725;
clays (except ball clay) 893,000 short tons, value
$2,344,000; natural gas, 82 million cubic feet, val-
ue $32,000; peat, 3,000 tons; value of mineral pro-
duction that cannot be itemized, $50,405,000; to-
tal value of all mineral production, $215,098,725.
Seafood Production, 1979. Fish, 11,676,400
pounds, dockside value $2,883,071; crabs,
25,766,013 pounds, dockside value $6,791,136;
oysters, 2,100,204 bushels, dockside value
$17,120,385; clams, including soft-shell, hard-
shell, and surf, 10,660,300 pounds, dockside value
$9,866,816. Maryland leads the nation in oyster
production, ranks second in blue crabs, and ranks
fifteenth in commercial seafood landings.
Port of Baltimore, 1979. One of the leading ports
in the United States, handling nearly 60,000,000
tons of cargo in 1979. Foreign commerce totaled
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38.5 million tons. Baltimore is the second-ranked
container cargo port on the East Coast of the
United States, with more than 4.4 million tons
moved during 1979. Baltimore is also one of the
largest ports of entry for the importation of auto-
mobiles in the world, with over 230,000 units ar-
riving during the year. Other chief imports are
ore, chemicals, petroleum products, gypsum rock,
lumber, rolled and finished steel products, fertil-
izers and materials, unrefined copper, inedible
molasses, sugar, and general cargo. Chief exports
are grains, machinery, coal and coke, iron and
steel scrap, iron and steel semifinished products,
earth moving equipment, fertilizers, and general
cargo. The World Trade Center in Baltimore,
headquarters for the Port, serves as the center of
international commerce for the region.
State Airports. The state owns and operates two
airports, Baltimore-Washington International
(BWI) and Glenn L. Martin State Airport. Re-
cent expansions of the BWI terminal building and
addition of nine carriers (international, domestic,
and commuter) have contributed to significant
growth of passenger traffic. The airport also han-
dled approximately 144 million pounds of freight
in 1979. When expansion is complete, BWI will
be one of the most attractive and efficient air-
ports in the world, capable of accomodating 11.2
million passengers each year. Glenn L. Martin
State Airport is a general aviation facility primar-
ily for private and corporate aircraft.
State Railroads. The state currently runs four
commuter and eleven freight lines. The commuter
lines include two Baltimore-Washington lines, one
Brunswick-Washington line, and the "Chesa-
peake" line, connecting Pennsylvania, Delaware,
and Maryland. Freight lines include eight on
Maryland's Eastern Shore. The five Class I rail-
roads presently operating in Maryland cover al-
most 900 route miles.
Incorporated Cities Over 10,000, 1970. Balti-
more, 905,759; Rockville, 41,564; Hagerstown,
35,862; Bowie, 35,028; Cumberland, 29,724; An-
napolis, 29,592; College Park, 26,156; Frederick,
23,641; Takoma Park, 18,433; Greenbelt, 18,199;
Salisbury, 15,252; Hyattsville, 14,998; New
Carrollton, 13,395; Aberdeen, 12,375; Cambridge,
11,595; and Laurel, 10,525.
Unincorporated Areas Over 20,000, 1970. Dun-
dalk, 85,377; Towson, 77,779; Silver Spring,
77,496; Bethesda, 71,621; Wheaton, 66,247;
Catonsville, 54,812; Glen Bumie, 38,608; Essex,
38,193; Chillum, 35,656; Randallstown, 33,683;
Parkville, 33,589; Suitland-Silver Hill, 30,355;
Woodlawn-Woodmoor, 28,821; Pikesville, 25,395;
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