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

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

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The percentage standard errors shown in this column indicate the differences 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:

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

(iii) Three times the percentage shown: almost always. 2Excludes shipments from fluid milk plants.

Does not include small amounts withheld in the 1947 Census tables to avoid disclosure of figures for individual companies.

"Revised.
Includes knit outerwear T-shirts made in underwear mills, which were valued at $20,221,000 in 1947.

6The 1947 value of shipments figures for rough lumber and for dressed lumber published in the 1947 Census of Manufactures reports, $920,452 thousand and $1,185,762 thousand, respectively, are not strictly comparable with the 1949 and 1950 estimates because (a) $213,000 thousand value of shipments for sawmills producing between 200 M and 1,000 M board feet of lumber was assumed to have been rough lumber but subsequent analysis of the reported data indicates that a considerable portion of this lumber was shipped in dressed form, and (b) value of shipments data were not collected from sawmills producing less than 200 M board feet. The small mills (less than 200 M board feet) account for approximately 5 percent of the total production of lumber.

?Less than 3 percent of this total represents shipments by establishments primarily engaged in activities classified as nonmanufacturing.

8Figure represents value of production.
Figure represents value of coal chemical materials sold or used.

10 In the 1950 Annual Survey quarry tile is classified in product class 32590 "Other structural clay products". However, Facts for Industry Series M26B from which the figures for product class 32530 were obtained, includes quarry tile with floor and wall tile.

llThe 1947 values for product classes 36141, 36142, 36143, and 36144 are not strictly comparable with the 1950 estimates for these product classes because the value of interplant transfers of motors and generators is excluded from the 1947 data for these specific classes of products. Transfer values are included in the 1950 figures. In 1947, the following values were reported:

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Table 1.--VALUE OF SHIPMENTS, BY SELECTED CLASSES OF PRODUCTS, FOR THE UNITED STATES:

1950, 1949, AND 1947--Continued

Reference list of sources (indicated in Columns (F) and (G) of the table)

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Table 2.--IRON CASTINGS CONSUMED BY METAL FABRICATING ESTABLISHMENTS, BY SELECTED INDUSTRY GROUPS AND INDUSTRIES: 1950, 1949, AND 1947

(Money figures in THOUSANDS. Estimates are published for industries (1) which consumed at least 5,000 tons of iron castings in
1950 and 10,000 tons in 1949, and (2) for which the standard error of estimates for figures in colums A and D is 15 percent or
less. Unpublished estimates, including those which can be derived by subtraction, have standard errors considerably in excess
of the published data. Industry group totals (2-digit and 3-digit) include only the estimates for those industries for which
data on consumption of iron castings were collected in 1950, 1949, and 1947. For a list of such industries, see the 1947
Census of Manufactures, Volume 1, Chapter IX, table 11, and the text entitled "Metals" preceding that table.)

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342 Cutlery, hand tools, and hardware. 3423 Hand tools, n.e.c.

343 Heating and plumbing equipment......... 3439 Heating and cooking apparatus, n.e.c.

344 Structural metal products. 3443 Boiler shop products.... 346 Metal stamping and coating.... 35 Machinery (except electrical). 351 Engines and turbines...... 3511 Steam engines and turbines.. 3519 Internal-combustion engines.

352 Tractors and farm machinery.. 3521 Tractors...... 3522 Farm machinery (except tractors)

353 Construction and mining machinery... 3531 Construction and mining machinery.

354 Metalworking machinery.......... 3541 Machine tools..... 3542 Metalworking machinery, n.e.c... 3543 Cutting tools, jigs, fixtures, etc.

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355 Special-industry machinery, n.e.c.... 3552 Textile machinery......... 3554 Paper-industries machinery... 3555 Printing-trades machinery.......... 3559 Special-industry machinery, n.e.c...

356 General industrial machinery. 3561 Pumps and compressors.. 3563 Conveyors.... 3565 Industrial trucks and tractors. 3566 Power-transmission equipment...... 3569 General industrial machinery, n.e.c... 357 office and store machines.....

358 Service and household machines.. 3581 Domestic laundry equipment...... 3582 Laundry and dry-cleaning machinery. 3583 Sewing machines... 3585 Refrigeration machinery. 3586 Measuring and dispensing pumps.

359 Miscellaneous machinery parts.... 3591 Valves and fittings, except plumbers'. 3593 Ball and roller bearinge..

36 Electrical machinery.. 361 Electrical industrial apparatus... 3614 Motors and generators....... 3615 Transformers...... 3616 Electrical control apparatus.

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Table 2.--IRON CASTINGS CONSUMED BY METAL FABRICATING ESTABLISHMENTS, BY SELECTED INDUSTRY GROUPS AND INDUSTRIES: 1950, 1949, AND 1947--Continued

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37 Transportation equipment..
2,852,118 $614,023 727,232 1,888,439 $335,258 709,713 1,621,591 $315,264 1

1 3 371 Motor vehicles and equipment.

2,781,339 595,135 666,833 1,785,551 316,195 3717 Motor vehicles and parts.

64,310 1,469,169 293,694 5/ 1 1 2,765,301 590, 919 666,833 1,773,142 312,974 644,310 1,459,485 291,185 5 Truck and bus bodies...

1 3713

5,065 1,226

(8) (8)

8,161 3715 Truck trailers..

2,138 | 10 10,350 2,746

(8)

1,523

371 372 Aircraft and parts...

5,868
1,938

(d)
(s) (8)

(a) 14,614 2,700 6 374 Railroad equipment.....

59,842 15,351 55,285

15,493 60,929 131,085

81 1 17,256

21 4 3741 Locomotives and parts..... 20,337 8,307 7,863 15,730 5,708

(8) 3742 Railroad and street cars........

11,068 3,408 1 1 2] 1 39,505 7,044 47,422 76,662

9,785

51,819 120,017 13,848 15, 1 3 5 3 dwithheld to avoid disclosing figures of individual companies.

sFor 1950, withheld because the standard error of the quantity estimate exceeds 15 percent; for 1949, withheld because the standard error of the quantity estimate exceeds 15 percent or because the quantity consumed was less than 10,000 tons.

In the 1947 Census of Manufacturers, very small consumers were not required to report their consumption of iron castings. The understatement of 1947 data for this reason is estimated at less than 2 percent on an over-all basis.

2The percentage standard errors shown in this colum indicate the differences 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.
(11) Twice the percentage shown: approximately 19 times out of 20.

(111) Three times the percentage shown: almost always. 3Data on consumption of metal shapes and forms for certain 4-digit Industries were not collected in 1947. Estimates for 1950 and 1949 are included in the totals of this table only for those 6-digit industries for which comparable data were collected in the three years. One of the industries thus excluded, and which consumed a substantial amount of iron castings, 18 industry 3599 (Machine shops). For this reason, totals for the 3-digit Industry group 359 are not shown. The effect this omitted industry has on the total consumption of iron castings at the major (2-digit) industry group level, however, is believed to be insignificant.

Table 3.--CARBON STEEL MILL SHAPES AND CASTINGS CONSUMED BY METAL FABRICATING ESTABLISHMENTS, BY SELECTED INDUSTRY GROUPS AND INDUSTRIES: 1950,

1949, AND 1947 (Money figures in THOUSANDS. Estimates are published for industries (1) which consumed at least 5,000 tons of carbon steel in 1950 and 1949, and (2) for which the standard error of estimate for figures in columns A and C is 15 percent or less. Unpublished estimates, including those which can be derived by subtraction, have standard errors considerably in excess of the published data. The total quantity of carbon steel produced and consumed in the same establishments for the metal fabricating industries in 1950 was 303,758 short tons with a standard error of estimate of 2 percent; data for individual industries are not shown because the standard error of estimate exceeds 15 percent in virtually all Instances. Industry group totals (2-digit and 3-digit) include only the estimates for those industries for which data on consumption of carbon steel were collected in 1950, 1949, and 1947. For a list of such industries, see the 1947 Census of Manufactures, Volume I, Chapter IX, table 11 and the tert entitled "Metals" preceding that table.)

1950
1949

19472

Standard

error of Purchases and

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Purchases and

1950 Code

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and 1949

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transfers
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estimates group

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(percent) Short tons

for columns Cost Short tons

Cost Short tons

Short tons Cost
А
B
с
D
E

AC D E

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