Since contract work is prevalent in the industry to which those products are primary, contract receipts were assigned a special 5-digit product class code to simplify industry coding.

11 Data for bonded fiber fabrics (code 22991) are included with textile goods, n.s.k. (code 22990), because the data were not satisfactorily reported due to problems of product definition.

12 Excludes commission receipts for Schiffli-machine embroidering on materials owned by others. In 1958, this amounted to $22,510,000. However, the 1958 total for product class 23970 includes $3,128,000 not differentiated between the value of product sales and receipts for commission work.

13 Product group 2398 is a census recode assigned during processing in order to combine the products of industries 2395, Pleating, Decorative and Novelty Stitching and Tucking for the Trade and 2396, Apparel Findings and Related Products. Because of mechanical difficulties in recoding industrial products, figures on the share of the largest companies for product classes 23983 and 23984 are not available.

14 Includes an undeterminable amount of "Receipts for contract logging," reported as "Logs, bolts and pulpwood, n.s.k.," product code 2411000. The total value of this latter figure was $90,015,000.

15 This figure includes an undetermined amount of duplication since veneer purchased by plywood manufacturers and consumed in the production of plywood is shown in product class 24325, Hardwood Veneer and 24326, Softwood Veneer; and the reported values of plywood shipped include the value of veneer consumed.

18 Not available. Reporting and classification difficulties as to identification of wood and metal partitions, and shelving, created a large "not specified by kind" category, and made it necessary to combine the 4-digit product totals. Ratios for the 4 and 8 largest companies were recalculated.

17 Ratios not available. In the mechanical conversion to the revised product codes based on the 1957 system, the products of a significant number of small establishments were not properly changed from product group 2782. Although the total shipments have been corrected, it was not feasible to correct the individual figures for small establishments.

18 Represents values reported by tar distillers and excludes shipments for tar, tar crudes, and pitches by establishments classified in Industry 2911, Petroleum Refinery and 3312, Blast Furnaces and Steel Mills (byproduct coke ovens).

19 Excludes rubbing alcohol (primary to Industry 2834, Pharmaceutical Preparations) and antifreeze (primary to Industry 2899, Chemicals and Chemical Preparations, n.e.c.).

20 Excludes shipments of inorganic chemicals shipped by establishments classified as primarily "Nonmanufacturing." The shipments reported by nonmanufacturing establishments classified in "Mineral industries" and by the Tennessee Valley Authority amounted to $127,696,000.

21 Cough drops selling at retail for 10 cents or less are included in product class 20716, Salted Nuts and Other Confectionery-type Products.

22 Separate figures not available.

23 Excludes explosives produced in Government-owned plants operated by private firms.

24 Excludes value of laminated glass (code 32313) which is included with product group 3211.

25 Not completely comparable. In 1954, an undetermined amount of vinyl asbestos tile was included in product group 3971, Plastic Products, n.e.c.

26 Excludes the value of these products produced and consumed within the same plant in the manufacture of other products. The data are limited, therefore, to the value of these products that were produced for sale in commercial markets or for transfer to other plants of the same company for use in manu facturing other products.

27 In 1954, product classes 33577, 33578, and 33579 comprised a single product class. On a combined basis the 1958 value of shipments amounted to $820,056,000, of which the 4, 8, and 20 largest companies accounted for 31, 50, and 76 percent, respectively; the 1954 value of shipments amounted to $778,322,000, of which the 4, 8, and 20 largest companies accounted for 37, 55, and 80 percent, respectively.

28 Not completely comparable; 1954 figures include "Metal fluid milk shipping and delivery containers" valued at $8,638,000. In 1958, these containers were included in product group 34913.

20 Value represents chiefly receipts for work done on materials owned by others. The value represents only the work done by establishments classified in the industry to which the product or service is primary. 30 In 1954, product classes 34941 and 34942 were combined.

31 Gas turbines and parts and accessories for gas turbines (which amounted to $60,707,000 in 1958) were excluded from this product class in 1954. Gas turbines were included with product class 35196 and parts and parts and accessories with product class 35197.

32 Includes $8,442,000 "not specified by kind."

33 In 1954, product classes 35611 and 35612 were combined.

34 For the purposes of this survey, phonographs and record-player attachments are classified in product class 36511.

35 Represents work done.

Table 5

This table is based on the industry definitions contained in the 1957 revised SIC. Thus, it is not directly comparable to tables 2 and 3. Table 5 deals with the establishment as a separate unit in contrast to tables 2 and 3 in which all establishments under common ownership in each industry were combined and treated as one company. In this table, individual establishments were grouped into 10 size classes according to employment and their total value of shipments (of secondary as well as primary products) was tabulated. This table is similar to the size table included in both the 1958 and 1954 census industry reports.

169

Establishments with an average of

1-4
5-9
20-49
10-19
50-99 100-249 250-499 500-999
employees employees employees employees employees employees employees employees