COMPARATIVE LEVELS OF LABOR PRODUCTIVITY IN THE US AND AND THE USSR 195

Document Type: 
Collection: 
Document Number (FOIA) /ESDN (CREST): 
CIA-RDP79-01093A000700100006-5
Release Decision: 
RIPPUB
Original Classification: 
S
Document Page Count: 
19
Document Creation Date: 
November 9, 2016
Document Release Date: 
July 7, 1999
Sequence Number: 
6
Case Number: 
Publication Date: 
December 6, 1954
Content Type: 
REPORT
File: 
AttachmentSize
PDF icon CIA-RDP79-01093A000700100006-5.pdf768.34 KB
Body: 
Approved For Release 1 79-01093A000700100006-5 S- US OFFICIALS ONLY PROVISIONAL INTELLIGENCE REPORT 1,2 8 COMPARATIVE LEVELS OF LABOR PRODUCTIVITY IN THE US AND THE USSR 1951 CIA/RR PR-88 6 December 1954 NOTICE The data and conclusions contained in this report do not necessarily represent the final position of ORR and should be regarded as provisional only and subject to revision. Comments and data which may be available to the user are solicited. THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE NATIONAL DEFENSE OF THE UNITED STATES WITHIN THE MEANING OF THE ESPIONAGE LAWS, TITLE 18, USC, SECS. 793 AND 794, THE TRANSMISSION OR REVELATION OF WHICH IN ANY MANNER TO AN UNAUTHORIZED PERSON IS PROHIBITED BY LAW. CENTRAL INTELLIGENCE AGENCY Office of Research and Reports No - ) . US OFFICIALS ONLY DOCUMENT QLAsa. CHANGED TO:~,~s44 KXT REVIEW DA t: gU TH: rr HR 7 HR ?2 00 R @ E41-M-79 49W OW 0 EVIEWER: g~5114 100006-5 Approved For Release 1999/0 CONTENTS Pag Summary . . . . . . . . . . . . . . . . 1 I. Introduction . . . . . . . . . . . . . . . . . . . . . 1 II. Comparative Levels of Labor Productivity in the US and the USSR in the Prewar Period . . . . . . . . . . . . 2 III. Comparative Levels of Labor Productivity in the US and the USSR in 1951 . . . . . . . . . . . . . . . . . . . . 5 A. Coal Mining . . . . . . . . . . . . . . . . . . . . . 6 B. Petroleum Extraction . . . . 7 C. Iron Ore Mining . . . . . . . 7 D. Blast Furnace Operations . . 7 E. Timber Industry . . . . . . . 8 F. Cotton Textile Manufacturing 8 G. Metal-Fabricating and Machinery Industries . . . . . 8 H. Railroad Transportation . . . . . . . . . . . . 10 Appendixes Appendix A. Gaps in Intelligence . . . . . . . . . ? . . 11 Appendix B. Sources and Evaluation of Sources . . . . . 13 Tables 1. Relative Labor Productivity in Individual Industries in the US and the USSR, Selected Years, 1936-39 . . . . . . 2. Comparison of Indexes of Labor Productivity in the US and the USSR, 1950. . . 3. Comparison of Output per Worker In the US and the USSR, 1951 . . . . . . . . . . . . . . . . . . . . . . . . . . Indexes of Output per Man-Hour of Direct Labor in the US Selected Types of Equipment and Selected Years, 1947-50 . . . . . . . . . . . . . . . . . . ..... . Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Re IA-RDP79-01093A000700100006-5 Page 5. Indexes of Annual output per Worker in the USSR 1950 and 1953 . . . . . . . . ' 9 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/0 CIA,/RR PR-S$ (ORR Project 45.546) X093A000700100006-5 COMPARATIVE LEY;-74S, OF;:,LA3OR PRODUCTIVITY E; U AND THE_ USSR* . 1, For those industries for which comparisons could be made, in- creases in productivity.since 1939 have been somewhat more rapid in the US than in the USSR. 'The.depress.ing effects of World War II on Soviet productivity account to_some extent for the lower Soviet rate. In both the.US.and the..USSR.the rates of change in produc- tivity have been wide in range. - The greatest increases in the USSR have been in those industries where investment was concentrated. In the.mining industries, the considerable Soviet lag behind US productivity. levels results, to a large extent, from natural factors which cannot easily be overcome. In the producer goods industries, where the rate of investment has been.high, Soviet data indicate rapid advances toward US levels, although few direct comparisons could be made. In consumer goods industries, the greater lag in. Soviet produc- tivitycould be overcome in a relatively short period of time with investment in more productive equipment. 1. Introduction. This report undertakes to compare thelevels of productivity in those US and Soviet industries for which information could be ob- tained. It should-be noted that: for several reasons the estimates * The estimates and conclusions contained in this report. represent the best judgment of the responsible analyst as of 15Septerrb er 1954. CONFIDE Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 for the USSR and the US are not strictly comparable. The US man-year is approximately 2,000.hours, the Soviet man- year approximately 2,400 hours. Although "production workers" are nearly the same categories in both countries, the data are not de- tailed enough t9 permit determination of the degree of difference. If it is true that the USSR is still overstaffed with nonproduction workers compared with the US, "all workers" would be a more revealing basis for comparison, but current Soviet data are lacking for this. In any event, there has been a significant increase in the proportion of nonproduction personnel in many US industries. On a man-year basis, the above factors tend to make the 1951 comparison appear more favorable to the USSR. To the extent that no increase was assumed between the 1937 output-per-worker figures and the 1.940 base of the indexes used for projection, the Soviet current output-per-worker estimates are understatements. Those industries in which the USSR claims that is has made the greatest strides in increasing productivity cannot be presented for comparison. US data for steel works cannot be separated from data for rolling mills which would be necessary to match Soviet categories. In the metal-fabricating and machinery industries, either Soviet data or US data are not available, or estimates can be made only in monetary terms, the comparability of which is most un- certain. The date of information used was determined by availability. Discrepancies from lack of comparability in dates are not believed to be large. II. Comparative Levels of Labor Productivity in the US and the USSR in the Prewar Period By 1937, the USSR had made considerable advances in labor pro- ductivity, but output per worker still lagged far behind levels attained in the US. Soviet output per worker as a percent of US output per worle r is shown in Table 1.4 * T :)le 1 follows on p. 3. Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 T,ablea 1 Relative Labor Productivity in Individual Industries in the .US. and the USSR /* Selected,,Years, 1936-39 Industry Unit of Measure Years USSR as a Percent of US Coal Mining Metric tons per year USSR 1937 38.8 per wage earner US 1936 Petroleum and Metric tons per year USSR 1938 50.6 Gas Extraction per wage earner US 1937 Iron Ore Mining Metric tons per year 1937 25.8 Iron and Steel per wage earner Ne~ric tons of:pig 1937 46.7 Machinery iron per year per wage earner Annual value per .1936 55.7 wage earner.: Metric tons of,sulfuric 1937 40.0 Cotton Textiles acid per wage earner per year Metric tons of yarn per USSR 1939 1.8.6 wage earner per year US 1937 Meters of cloth per wage earner per year USSR 1939 38.0 US 1937 It will be observed that the relatively new, high-investment machinery industry was closest to US levels. From 1928 to 1937, those Soviet industries which had the greatest increases in equip- ment per worker showed the greatest increases in labor productivity./ Footnote references in.arabic numerals. are to sources listed in Appendix-3. -3- S-E-C-R-E-T: Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 S-E-C-R-E-T In the period since 1937-39, the rates of change in productivity levels have been wide in both. countries. Selected rates of increase are shown in Table 2. Because of changes in Soviet statistical practices as well as in Soviet boundaries, a continuous series in- eluding the years 1937 through 1939 could not be constructed. In those industries for which indexes for both countries were available, the rates of increase were generally more rapid in the US than in the USSR. The primary exception was pig iron smelting. Comparison of Indexes of Labor Productivity in the US and USSR 1950 Industry US Output per Man-Year 1939 - 100 Soviet Output per Man-Year Y 1910 100 x Coal Mining Bituminous 98.2 123.3 a/ 4/ Anthracite 87.2 // Pig Iron Smelting 92.0 b/ LI y 149.0 Crude Petroleum and Natural Gasoline 173.0 b/ 1 ii 103.6 Railroad Transportation 149.9 a/ 3/ a. ?r man-hour. b. Per man-year. c. 1951. Although the effects of World War II retarded improvement in the Soviet extractive industries and in transportation, this may not have been true of various branches of heavy malufacturing. Some of the productivity increases attained under wartime pressure in Soviet engineering industries probably were maintained and contributed to the rapidity with which prewar levels of productivity in the machine -4- S-E-C-R-E-T Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 industry as a whole were regained and surpassed in the postwar period. 9/ In the exception noted above, pig iron smelting, much of the productivity increase resulted from the installation of more pro- ductive equipment to'replace that damaged by the war. Similar improvements were probably made in other war-damaged installations, with consequent increments in productivity. III. Comparative Levels of Labor Productivity in the US and the USSR in ..51.* In those economic sectors for which estimates of output per worker could be made in terms of physical units, Soviet productivity in 1951 ranged from about 15 to about 73 percent of US productivity levels. Comparisons of output per worker in the US and the U:3SR in 1951 are shown in Table 3.4** Those industries for which reasonably valid and comparable estimates could not be made, especially the metal-fabricating and machinery industries, are those in which the USSR has probably made the greatest productivity advances, and would probably be closer to US levels. The factors which condition the sizable variation of Soviet levels of labor productivity compared witn US levels are described in general terms in the following sections of this report. Avail- able information does not permit more precise evaluation of the relative influence of the various factors. In the mining industries, where Soviet productivity in relatively low, the nature of the resources exerts considerable limitations on the possibility of in- crease in productivity. In most other sectors of the Soviet economy, the level of productivity as well as the increases in productivity appear to be conditioned primarily by technology and investment. It will be observed that the industry in which Soviet productivity is lowest in comparison with the US level is the textile industry, in which the rate of investment has been relatively low. In 1951, productivity in Soviet industries varied from US levels in much the same pattern as in 1937-39. # 1951 is the latest year for which US information was available. Table 3 follows on p. 6. -5- Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 S-E-C-R-E-T Table 3 Comparison of Output per Worker in the US and USSR 1951 Industry USSR as Percent US of US a/ Coal Mining, Metric Tons per Annum 323.0 10/ 1,297.8 11/ 25 P 371.9 U/ 28 etroleum Extraction, per Annum Metric Tons of Crude Oil per Annum 820.0 13 2,5014.711/ 33 Iron Ore Mining, Metric Tons per Annum 1,000.0 15/ 2,920.3 16/ 34 Blast Furnaces, Metric Tons per Annum 1,217.0 17/ 1,674.9 18 73 Cotton Textiles Spinning, Kilograms per Hour W i 2.36 L9/ 20/ 15.38 15 eav ng, Meters per hour 11.4 21/ _ 62.4 _/ 18 Logging, Cubic Meters Hauled per Day 1.03.23 2.36 24/ 42 Rail Transportation Thousand Cumulative Ton- Kilometers per Annum (1953) 473.0 25/ 948.1 26/ 50 a. Rounded. be CIA estimate is 323.0; RA1 estimate, 371.9. A. Coal Mining. Output per worker in Soviet coal mining in 1951 was 323 or 371.9 metric tons, or only about 25 to 28 percent of that in the us. Much of the difference between US and Soviet productivity 6 - S-E-C-R-E-T Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 S-E-C-R-E-T in coal mining results.,from natur..al?.factors. The thin seams and deep shafts of Soviet mines and the lower proportion of strip mining in the USSR limit the possibilities of mechanization and therefore limit Soviet.productivity. Nevertheless, increases above present Soviet levels' of?productivity can be made through improved mechanization and technology. 27 B. Petroleum Extraction. Output per worker in the Soviet petroleum extraction in- dustry in 1951 was about B20 metric tons of crude oil extracted, or 33 percent.of the US level. Natural factors, such as the depth of wells, are generally more favorable in the USSR. Soviet drilling technology is good,, but there may be much idle time. Another reason for the disparity be- tween Soviet and US productivity is the high degree of mechanization and automatization of operations in the-production and field gathering phases of the petroleum industry in the US. 28 Better management practices may also beta factor.. C. Iron Ore Mining., Output per worker in Soviet iron-ore mining is little more than one-third that in the US, or about 1,000 metric tons per year. The difference results from the operation of several factors. Only about 30 percent of Soviet iron ore comes from open-pit mines, com- pared with about 65 percent of US output. Open pits lend themselves to a greater degree of mechanization, and their productivity is usually several times higher than that of underground mines. In- creases in Soviet productivity in terms of usable ore are also limited by decreasing yields of usable ore from crude. 29 It has been estimated that.these natural factors cause Soviet productivity to lag 3,0 percent behind that of the US.30 The remainder of the Soviet lag behind US levels results from differences in technology and: the utilization of equipment. D. Blast Furnace Operations. Output per work -,r in 1 951 in Soviet blast furnaces was 73 percent of the US level of productivity, or 1,217 metric tons per year. Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 S-E-C-R-E-T This level is above previous Soviet attainments and has resulted largely from investment in high-productivity equipment, especially since World War II. It has been estimated that the productivity of modern Soviet blast furnaces is comparable to that of US operating equipment, but that Soviet staffing patterns result in lower output per worker. 31 E. Timber Industr Soviet output per worker in logging camps is approximately 1 cubic meter per day, or about 42 percent of that in the US. Much of this difference results from low levels of mechanization and the utilization of equipment. Further important reasons for the relatively low Soviet level of output are the isolation and the adverse climate of Soviet logging areas, both of which cause trans- portation and labor problems. L2/ F. Cotton Textile Manufacturing. The output per worker in the Soviet textile industry is con- siderably below that in the US textile industry. In spinning, Soviet productivity was in 1951 about 2.36 kilograms per hour, or 15 per- cent of the US level; and in weaving, 11.1 meters per hour, or about 18 percent of the US level. This lag in Soviet productivity is largely the result of technological differences which cam be overooi'ze. The number of spindles per spinner in the USSR approximates 170, while in the US, the number ranges from 6 to 18 times as high. 33 In"weaving, in the USSR, each weaver handles about 3 looms, while in the US weavers average from 17 to 1Q0 looms each. 3 It is clear that conversion in the Soviet textile industry to power equipment of a higher productivity could contribute to a considerable increase in output per worker. G. Metal-Fabricating and Machinery Industries. The information available on this sector of Soviet industry is not sufficient to permit detailed comparisons with US levels of productivity. The productivity indexes available for both countries, S -E-C -R-E-T Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 S-E-C:-R-E-T as shown in Table 4 and Table's, however, suggest that the USSR is making rapid advances toward US levels. Other information on the output and techniques of individual-Soviet plants also indicates increasing productivity. L VA' Table 4 Indexes of Output per Mazi-Hour of .Direct Labor in the US, Selected Types.of;auipment and Selected Years ,1947-50 Index Types of Equipment Year 1939 = 100 General Industrial Equipment,. 1.950 134.9 36/ Including: Ball Bearings 1950 200.4 37/ Lift Trucks 1950 238.6 79/ Freight Cars 1948 115.9 39/ Metal-Forming ` Machinery 1949 112.2/ Electrical Equipment and Supplies 1947 126.4 T/ Machine Tools 150 109.7 T2/ Table 5 Indexes of Annual Output per Worker in the USSR of 1i3/ 1950 and.1953 Index Types of Equipment Year 1940 100 Ministry of Machine and Instrument 1950 188.8 Construction 1953 255.6 Antiftiction Bearings 1950 170.7 .Automotive and Tractor Industry 1950 145.0 Oil Machinery Production 1950 200.0, Transportation Equipment 1950 200.0 * Footnotes for Table 5 follow on p. 10. -9- ~;~ S-E-C ~Z-E-T Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 S-E-Q-R-E-T Table Indexes of Annual Output per Worker in the USSR / / 1950 and 1953 a. The indexes of annual outpu per worker in t'ze U MR Tor 'the- metal-fabricating and machinery industries were developed on the assumption that Soviet productivity in 1950 and 1953 was still only 66 percent of US levels of 1947. b.,. Planned, probably not achieved. H. Railroad Transportation. Soviet output per worker in rail transport in terms of cumulative revenue ton-kilometers is about 50 percent of that in the US, or about 473 thousand tonr,kilometers per year. The differential is almost, if not entirely, the result of the much greater degree of mechanization of antomatization of trans- port in the US, as well as better traffic control. Kaganovich pointed out in his recent speech that dispatch centralization would make it possible to establish control from a single center over an area of 1S0 or more kilometers, and thereby reduce the operations staff by 50 percent. The difference in the average net weight of freight trains also contributes to the gap between Soviet and US levels of pro- ductivity. $,E,C,-R-E-T Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 S-E-C-R-E-T APPENDIX A GAPS IN INTELLIGENCE Information is lacking for comparison of labor productivity in the Soviet chemicals industry, consumer goods industries other than cotton textiles, nonferrous metallurgy, transportation, and con- struction. More detailed analysis of changes in US productivity in relation to changes in technology and equipment would make it easier to es- timate the changes which might have occurred in Soviet productivity in response to similar changes in equipment and technology. S-E-C-R-E-T Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 S-E-C-R-E-T APPENDIX B SOURCES AND EVALUATION OF SOURCES 1. Evaluation of Sources. The primary sources of information on the USSR were Soviet pub- lications and broadcasts. Information concerning factors affecting productivity was found conveniently summarized in various CIA and other US Government publications. Soviet Economic Growth, edited by A. Bergson, and containing a veryy use ul chapter by. Walter Galenson ("Industrial Labor'Productivity"), was also valuable. Galenson's later work, A Comparison of Labor Producti..vit in Soviet and American Industr , published under the auspices of RAND in January 19 , con- tains detailed breakdowns of Soviet productivity data for the period from 1928 through 1939. Information on US output per worker was taken primarily from US government publications. 2. Sources. Evaluations, following the classification entry and designated "Eval.," have the following significance: Source of Information Information Doc. - Documentary, 1 - Confirmed by other sources A - Completely reliable 2 - Probably true B - Usually reliable 3 - Possibly true C - Fairly reliable 4 - Doubtful D - Not usually reliable 5 - Probably false E - Not reliable 6 - Cannot be judged F - Cannot be judged "Documentary" refers to original documents of foreign governments and organizations; copies or translations of such documents by a staff officer; or information extracted from such documents by a staff officer, all of which may carry the field evaluation "Documentary." - 13 - S-E-C-R-E-T Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 S-E-C-R-E-T Evaluations not otherwise designated are those appearing on the cited document; those designated "RR" are by the author of this report. No "RR" evaluation is given when the author agrees with the evaluation on the cited document. 1. Walter Galenson, "Industrial Labor Productivity," in Soviet Economic Growth, Abram Berg-son, ed., 1953, p. 203. U. Eval. RR 2. 2. Ibid.., pp. 198-202. 3. CIA RR PR-68, Industrial Labor Productivity in the USSR, 9 Aug 1954. S, US OFFICIALS ONLY. 4. Monthly Labor Review, Oct 1951, Pp. 422-424. U. Eval. Doc. 5. Ibid. 6. Statistical Abstract of the United States, 1951, pp. 754, 796. U. Eval. Doc. Annual Survey of Manufactures, 1951, p. 30. U. Eval. Doc. Statistical Abstract of the United States, 1953, p. 826. U. Eval. Doc. 7. Monthly Labor Review, Mar 1954, p. 325. U. Eval. Doc. Statistical Abstract of the United States, 1953, pp. 733-4. val. Doc. Statistical Abstract of the United States 1946, p. 734. U. Eval. Doc. 8. Monthl Labor Review, Oct 19 1, off. cit. 9. 7,WWi , .off-21-1- 10. ' Ibid. 11. Monthly Labor Review, Mar 1954, p. 325. U. Eval. Doc. Statistical Abstract., 1953, 22' cit. 12. Z, R- , op. cit. 13. Ibid. 14. Monthly Labor Review, Mar 1954, o . cit. "eitat s ie Abstract, 1953, op. t. 15. - - , op. cit. -" 16. Monthly Labor Review, Mar 1954, op. cit. tatistical Abstract, 1953, op. cit.- 17. PR-6019 op, c t. 18. Annual Survey of M nufactures, 1952, p. 29. U. Eval. Doc. Statistical Abstract- 19 , op* cit. 19. CIA/RR M-60, OP* cit. 20. Bureau of Labor Statistics, Report No. 16, Coarse Cotton Grey Goods, Mar 1953, pp. 50-52. U. Eval. Doc. 21. CIA/ PR-68, op. cit. 22. Bureau of Labor Stat stics, op. cit. 23. C.IA/RR PR-68, op~. cit. 24. National LumberlIanufactures Association, Lumber Industry Facts, :L953, p. 42. U. Eval. RR 1. - 14 - S-E-C-R-E-T Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093AO00700100006-5 S-E-C-R-E-T 25. CIA/RR PR-68, op. cit. 26. Association of American Railroads, Bureau of Railway Economics, A Review of Railway Operations_in_1M , Special Series No. 88, 1954. U. Eval. RR 1. ICC, Statement No. M-300, Wage Statistics of Class I Railways in the US, 1953. U. Eval.-TM 1. 27. A. E on, op. cit., pp. 185-187. Solid Fuels I n- tie USSR, 29 Jan 1954, pp. 18-19, 31-32, 91-145, 156-15 , US 0T. . ALS OMLY. 28. CIA/RR PR-17 (I-B), Petroleum in the Soviet Bloc; Production and Exploration of Petroleum in the R, 13 Jun 1952., pp. 44-4 NIS 26, Supplement V. Petroleum, Oct 1952, pp. 2-35 to 2-43. S. 29. Nicholas Rodin, RAND, Project N. RM 1116, Productivity in Soviet Iron Mining. 1890-1960, 7 Jul 1953.E Eva l. . 30. I bid. STATSPEC 31. Bergson, op. cit., p. 223. 32. Izvestiya, 187 ar 1953. A. 1. U. Eval. RR 94, 10 Sep 1954. S US OFFICIALS ONLY. 25X1A 33. USSR Estimate, CIA FDD, U-1782, Development of the Cotton Industry in the USSR, 26 Mar 19 2. val. RTZ 2. US Estimates. Bureau of Labor Statistics, Report No. 16, Coarse Cotton Grey Goods, oa. cit. 34. USSR Estimates. CIA FDD, U-1782, op. cit. U E~ stimates. i3ureau of Labor Statistics, No. 16, 22. cit. Bureau of Labor Statistics, No. 58., Fine Cotton Grey Goods, 35. 36. Bureau of Labor Statistics, Trends in Man-hours Expended per Unit of Selected Types of General Industrial Equipment, 1949-50 "Supplement.," May 1953# p. 3. U. 11;val. Doe. 37. Ibid. - 15 - Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 Approved For Release 1999/09/26 : CIA-RDP79-01093A000700100006-5 S-E-C-R-E-T 38. Ibid. 39. Bureau of Labor Statistics, Manhours Expended per Car, Selected Types of Railroad r reight Cars, 1939-, Nov 1950, p. 5. U. v . Doc. 40. Bureau of Labor Statistics, Trends in ianhours Expended per Unit, Selected Metal Forning Machinery, 1939-49., Feb 1952, p. 4. U. Eval. Doc. 41. Bureau of Labor Statistics, Trends in Manhours Expended per Unit Electrical Equipment and Supplies.- 1939-47, Apr 1950, p. . U. Eval. Doc. L2. Bureau of Labor Statistics, Trends in Manhours Expended par. Unit Selected Types of Machine Tools 19}9-O,