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GENERAL STATISTICS IN DETAIL FOR THE GROUP, THE SUBGROUPS, AND FOR THE INDUSTRIES:· 1939

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Number of establishments.
Proprietors and firm members.
Persons reported by manufacturing industries, total.

Salaried officers of corporations...
Manufacturing:

Salaried employees.

Wage earners (average for the year).
Distribution.
Construction.

Other....
Salaries and wages, total.

Salaried officers
Manufacturing:

Salaries.

Wages. Distribution Construction

Other..
Cost of materials, supplies, containers, fuel, purchased electric energy,
and contract work, total.

Materials, supplies, and containers
Fuel.
Purchased electric energy

Contract work
Value of products.
Value added by manufacture..

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i The numbers at the head of each column represent the following industries:

1611, Wiring devices and supplies.
1612, Carbon products for the electrical industry, and

manufactures of carbon or artificial graphite. 1613, Electrical measuring instruments.

1619, Generating, distribution, and industrial aspara

tus, and apparatus for incorporation in manu

factured products, not elsewhere classified.
1620, Electrical appliances.
1630, Insulated wire and cable.
1640, Automotive electrical equipment.
1650, Electric lamps.

1661, Radios, radio tubes, and phonographs.
1662, Communication equipment.
1691, Batteries, storage and primary (dry and wet).
1692, X-ray and therapeutic apparatus and electronic

tubes.
1699, Electrical products not elsewhere classified.

WIRING DEVICES AND SUPPLIES

(A preliminary report for this industry was issued October 23, 1940)

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Description of the industry.—The establishments classified in this industry are engaged primarily in the manufacture of wiring devices, wiring supplies, insulation and insulating materials, conduits and fittings, and lightning arresters. Establishments whose major products are decorative lighting outfits are included in the "Lighting fixtures” industry and porcelain “insulators" are included in the "Porcelain electrical supplies” industry.

Statistics for prior census years.- No statistics, other than those for products, are available prior to 1937 for the “Wiring devices and supplies” industry. A special tabulation was made of the report for this industry for 1937 in order to obtain figures comparable with 1939.

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Number of establishments ?

146

6 Proprietors and firm members.

29

4 Persons reported by mapu

facturing establishments, tota) 3.

17, 960

181 Salaried officers of corporations :

260

6 Manufacturing: Salaried employees 3

1, 999

24 Wage earners (av.

erage for the year) 4

14, 564

122 Distribution

1, 075

29 Construction

45 Other

17 Salaries and wages, total 3. $25,093, 614

$316, 448 Salaried officers

2,008, 032 35, 700 Manufacturing: Salaries

3, 779, 729 51, 434 Wages

16, 905, 970 169, 057 Distribution

2, 292, 816 60, 257 Construction.

89, 038 Other....

17, 429 Cost of materials, supplies,

containers, fuel, pur.
chased electric energy,
and contract work, total 44, 505, 642 626, 650
Materials, supplies, and
containers

43, 158, 537 610, 031 Fuel

665, 295

8, 608 Purchased electric energy

621, 267 8,011 Contract work

60, 543 Value of products.

94, 305, 273 11,529, 967 Value added by manufacture!

49, 799, 631

903, 317

129, 229

64,300

123, 759

349, 404

130, 929

509, 952

81, 088

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1 Alabama, 1 establishment; Colorado, 1; Georgia, 1; Iowa, 1; Kentucky, 1; Maryland, 1; Michigan, 2; Minnesota, 1; New Hampshire, 1; Rhode Island, 2; Tennessee, 1; West Virginia, 4; Wisconsin, 2.

* See GENERAL EXPLANATIONS-Definition of establishment.
3 See GENERAL EXPLANATIONS--Persons engaged-general classification.
* See GENERAL EXPLANATIONS-Wage earners and wages.

* Value of products less cost of materials, supplies, containers, suel, purchased electric energy, and contract work. See GENERAL EXPLANATIONS-Value added by manufacture.

WIRING DEVICES AND SUPPLIES

365

Table 3.-VALUE OF PRODUCTS FOR THE UNITED STATES: 1939 AND 1937

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1 Value of lighting fixtures, insulated wire, resistance wire, appliance and extension cords, distribution cut-outs and suse links, telephone apparatus, etc.

TABLE 4.- PRODUCTS, BY KIND, QUANTITY, AND VALUE, FOR THE UNITED STATES: 1939 AND 1937

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18, 554, 067 $1, 842, 776 $2, 488, 926 $4, 220.067 $7, 453, 677

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18, 940, 362 $1,892, 581 $2, 488, 926 $5, 176, 975 $8, 150, 536

24, 830, 061 $2, 142, 428 $2,787, 609 $4, 398, 188 $9.470, 688

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$956, 908
$696, 859

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Wiring devices:
Attachment plugs and caps
Number reported-

Number

Value.
Number not reported, value.
Convenience outlets-
Number reported

Number

Value.
Number not reported, value.
Brass shell sockets (standard base)--
Number reported

Number

Value.
Number not reported, value.
All other lamp sockets and receptacles (all bases), value.
Snap switches, all types and sizes, value
Face plates, metal and composition-
Number reported-

Number

Value.
Number not reported, value.
Miscellaneous wiring devices, not elsewhere specified
Wiring supplies:

Pole-line hardware, value..
Conductor connectors-

Solderless service connectors
Industrial solderless connectors.
Splicing sleeves..

Soldering lugs
All overhead trolley-line material for street railways, mines, industrial haulage, and electrified

steam railroads, excluding wire and cable, poles, and pole-line hardware.

Rail bonds for both propulsion and signal circuits.
Insulators and insulating materials 2.
Conduits and fittings:

Flexible steel conduit
Standard weight conduit, including elbows and couplings.
Conduit fittings excluding elbows and couplings.
Thin-wall conduit and fittings
Cast-inetal outlet conduit fittings-

Watertight and marine fittings.
Industrial plugs and receptacles.

Hazardous-location, vapor-proof, and all other.
Switch boxes, outlet boxes, and covers.

Other (not including armored conductor). Lightning arresters and choke coils:

Radio and telephone..

Other.
Relays (excluding industrial motor-control and telephone).

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1 Figures not shown separately to avoid disclosing, exactly or approximately, data reported by individual establishments.

2 Includes porcelain and trolley-line insulators for 1937 but not for 1939; for 1939 these are included in the Porcelain Electrical Supplies industry. Production of insulators was reported for 1939 by the Porcelain Electrical Supplies industry as follows: Insulators, total value, $7,443,762; suspension type, $2,196,295; knobs, tubes, and cleats, $1,303,761; and other insulators, $3,943,706.

: No data.

TABLE 5.-WAGE EARNERS ENGAGED IN MANUFACTURING, BY MONTHS, FOR THE UNITED STATES,

1939 AND 1937, AND BY STATES, 1939

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146 111

15 3, 115

Number of establishments:

Total for the industry.

Reporting expenditures for plant and equipment. Value of prolucts:

Total for the industry..

Reporting expenditures for plant and equipment.
Expenditures for plant and equipment:

Total for the industry.....
Expenditures for new construction or major alterations of build.

ings and other fixed plant and structures Expenditures for new machinery and operating equipment. Expenditures for plant and equipment acquired in a "used" con.

dition from other owners and expenditures for land.

$94, 305, 273 90, 702, 038 1,936, 535

10 2, 571

247, 628 1, 607, 955

1 115

80,952

3 420

Table 7.–VALUE OF INVENTORIES OF MATERIALS AND FINISHED

PRODUCTS, AND VALUE OF PRODUCT8: 1939 AND 1937

1 9

769

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5 610

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550

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Prime movers-Continued.
Priine movers, driving generators, total-

Number

Horsepower..
Steam engines-

Number

Horsepower.
Steam turbines-

Number

Horsepower
Diesel and semi-Diesel engines-

Number..

Horsepower.
Other internal-combustion engines -

Number

Horsepower. Prime movers, driving generators, ordinarily idle (included above),

horsepower. Prime movers not driving generators, total

Number.

Horsepower.
Steam engines-

Number

Horsepower
Diesel and semi-Diesel engines-

Number

Horsepower. Prime movers not driving generators, ordinarily idle (included

above), horsepower. Generators, kilowatt rating, total. Generators, driven by

Steam engines, kilowatt rating.
Steam turbines, kilowatt rating
Diesel and semi-Diesel engines, kilowatt rating.

Other internal combustion engines,' kilowatt rating.
Generators, ordinarily idle (included above), kilowatt rating.
Electric motors, total:

Number

Horsepower.
Driven by purchased energy-

Number.

Horsepower
Driven by energy generated in establishments reporting-

Number..

Horsepower
Electric energy (kilowatt-hours):

Generated in plant..
Sold
Purchased

1 60

21, 399, 628

Inventories:
Beginning of year, total.

Finished products..

Materials, supplies, etc.
End of year,

total..
Finished products

Materials, supplies, etc..
Value of products for the industry, total....

Value for establishments reporting inventories

(includes value of products of establishments reporting no inventories op hand).. Value for establishments not reporting in

ventories...

24, 145, 229

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CARBON PRODUCTS FOR THE ELECTRICAL INDUSTRY, AND MANUFACTURES OF

CARBON OR ARTIFICIAL GRAPHITE

[A preliminary report for this industry was issued September 10, 1940)

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Description of the industry.—The establishments in this industry are engaged primarily in the manufacture of carbons; carbon, graphite, and metal-graphite brushes; plates, rods, and powder for making brushes; electrodes, and miscellaneous carbon, graphite, and metal-graphite specialties, including rings for steam seal.

Statistics for prior census years.- No statistics, other than those for products, are available for years prior to 1937 for the "Carbon products for the electrical industry, and manufactures of carbon or artificial graphite” industry. A special tabulation was made of the reports for 1937 in order to obtain figures comparable with those for 1939.

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Number of establishments
Proprietors and firm members.
Persons reported by manufacturing establishments, total :

Salaried officers of corporations 3.
Manufacturing:

Salaried employees :.

Wage earners (average for the year) 4.
Distribution
Construction.

Other.....
Salaries and wages, total s.

Salaried officers :
Manufacturing:

Salaries :

Wages.
Distribution.
Construction.

Other.....
Cost of materials, supplies, containers, fuel, purchased electric energy, and contract work, total...-

Materials, supplies, and containers.
Fuel.
Purchased electric energy

Contract work.
Value of products.
Value added by manufacture s-

$1, 808, 588

190, 631

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82,894

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1 Alabama, 2 establishments; California, 1; Illinois, 1; Michigan, 2; New Jersey, 2; Tennessee, 1; West Virginia, 1; Wisconsin, 2.
: See GENERAL EXPLANATIONS-Definition of establishment.
a See GENERAL EXPLANATIONS, Persons engaged-general classification.
* See GENERAL EXPLANATIONS-Wage earners and wages.

: Value of products less cost of materials, supplies, containers, suel, purchased electric energy, and contract work. See GENERAL EXPLANATIONS–Value added by manufacture.

Table 3.-VALUE OF PRODUCTS, FOR THE UNITED STATES: 1939 AND 1937

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