<Value of products less cost of materials, supplies, fuel, electric energy, and contract work.

3The percentage standard errors shown in this column indicate the difference that can be expected between the estimates and comparable complete canvass totals, because of sampling fluctuations. The estimates will differ from the complete totals by less than:

(1) The percentage shown: approximately 2 times out of 3
(ii) Twice the percentage shown: approximately 19 times out of 20

(iii) Three times the percentage shown: almost always "The Annual Survey estimates for industry group 24, "Lumber and wood products, except furniture," tend to be understated because of incomplete coverage of logging camps and logging contractors not operating sawmills (Standard Industrial Classification Industry 2411). This undercoverage is estimated at less than 5 percent.

Chapter III: SHIPMENTS. METALS, FUELS, AND INVENTORIES

are

Table 1.-VALUE OF SHIPMENTS, BY SELECTED CLASSES OF PRODUCTS, FOR THE UNITED STATES: 1950, 1949, AND 1947 (In Column (A), the first four digits of the 5-digit code refer to the industry (as defined in the Standard Industrial Classification system) in which the class of products is primarily classified. The fifth digit refers to the Census Bureau code assigned to a specific group of products. In Colums (c), (D), and (E), the values total shipments of the product classes described. For the most part, the 1950 and 1949 values are estimates derived from the sample Annual Survey of Manufactures and are qualified by the sampling variation (in percent) shown in Columns (F) and (G). Where the 1950 or 1949 values are other than Annual Survey estimates, letter symbols appear in Columns (F) or (G). The reference list of sources appearing at the end of the release is keyed to these letters. The 1950 and 1949 estimates may be understated to a slight degree by the omission of data for reported product class combinations of low value which could not be allocated to the appropriate product classes.)

(Value figures in thousands of dollars)

Table 1.--VALUE OF SHIPMENTS, BY SELECTED CLASSES OF PRODUCTS, FOR THE UNITED STATES: 1950, 1949, AND 1947--Continued

28820 28830 28942 28951 28961 28962 28963 28964

Linseed oil mill products.....
Soybean oil mill products.....
Gelatin except ready-to-mix desserts.
Carbon black...
Elemental gases....
Acetylene....
Carbon dioxide...
Other compressed and liquified gases.

(f)

193,315
593,839
30,352
884,604
65,063
50,584
25,627
3,788

219,838
550, 810

n.a.
874,685
60,283
46,904
25,803

169,173
700,773
37,161
71,049
48,095
38,581
20,372
2,653

3 (f) (e) (e) (e) (e)

4

Table 1.--VALUE OF SHIPMENTS, BY SELECTED CLASSES OF PRODUCTS, FOR THE UNITED STATES: 1950, 1949, AND 1947-Continued

(Value figures in thousands of dollars)

Table 1.-VALUE OF SHIPMENTS, BY SELECTED CLASSES OF PRODUCTS, FOR THE UNITED STATES: 1950, 1949, AND 1947-Continued

(Value figures in thousands of dollars)

1 15 10

34 34111 34220 34231 34232 34311 34312 34390 34391 34392 34394

1,019,987

70,871 143,239 104,543 207,778 195,107 204,317 54,563 26,279 125,064

Fabricated metal products

Metal cans.
Edge tools...
Mechanics' hand service tools.
Other hand tools......
Metal plumbing fixtures,
Plumbing fixture fittings and trim (brass goods).
Warm air furnaces and parts......
Cast iron heating boilers...
Cast iron radiators and convectors.
Water heaters, except electric...
Domestic heating stoves (space heaters)........
Domestic cooking stoves, ranges, and appliances, except

electric.....
Fabricated structural iron and steel.
Metal window sash and frames.....
Sheet-metal products......
Job-stampings, except automotive.
Job-stampings - automotive......
Screw-machine products...

34395 34396

34416 34422 34440 34631 34638 34950

35 35111 35112 35191

65,534 197,159

n.a.
n. a.

51,848
67,179

2 1

2

Machinery (except electrical)

Steam and hydraulic turbines; steam engines.....
Steam and hydraulic turbine generator-set units..
Gasoline engines, except outboard, aircraft, automobile,

truck and bus....
Diesel engines, except truck and bus.
Wheel-type tractors....
Tracklaying type tractors..
Garden tractors....
Plows and listers..
Harrows, rollers, pulverizers, etc...

3 1

35192 35211 35212 35213 35221 35222

35415 35416 35431

79,476
35,827

62,289
31,400

92,908
35,278

(a) ()

1

6

35432

Lathes....
Milling machines.
Jigs; fixtures; forming, stamping and piercing punches and

dies; die sets; and sub-presses....
Small cutting tools for machine tools and metalworking

machinery..
Textile machinery.
Paper-industries machinery.
Printing-trades machinery and equipment...
Foundry machinery and equipment, including foundry patterns

and molds...
Industrial pumps.....
Domestic water systems.

35520 35540 35550 35592

35611 35612