Douglas Aircraft Co., Inc.

In the Matter Of DOUGLAS AIRCRAFT Co iPA;4Y, INC._ and LOCAL 1652, INTERNATIONAL ASSOCIATION OF MACHINISTS In the Matter of DouoLAS AIRCRAFT Co1IPANY, INC. and LOCAL B-134, INITRNATIONAT; BROTHERHOOD OF ELECTRICAL WORK ERS In the Matter of DOUGLAS AIRCRAFT COMPANY, INC. and CARPENTERS DISTRIC' COUNCIL of CHICAGO, A. F: of L. III the Matter of DOUGLAS AIRCRAFT COMPANY, INC. an STEAMFrrTERS PROTECTIVE ASSOCIATION , LOCAL 597,, AFFILIATED VITH UNITED AS- SOCIATION OF JOURNEYMEN, PLUMBERS & STEAM 1' ITTERS OF U. S. AND CANADA, A. F. of L. Cases Nos. 13-R-1716,13-R-1913, .73-R-1951 iind 13-R 1965, rapec- tiveZy=D&ide?Z November 6,1943. A16. Lester Asher, for the Board. Mr. John J. Ballicff, of Park Ridge, Ill., for the Company. Mr. J. W. Ramsey and Mr: R. W. Riddle, of Chicago, ±11., for, the I.A.M. Mr. Emory J. Smith, of Chicago,, Ill., for the I. B. . `AT. and the Carpenters. Mr. Daniel D. Carinell and Mr. Conrad, Seipp, of Chicago, Ill., for the Pipefitters. Mr. Ben 1l1eyOrs, of Chicago, ill., for the C. I. O. Mr. C. P. Pdrkinson, of Detroit, Mich., for the Association. Mr. John Gavin, of Chicago, Ill., for the Operating Engineers. Mr. William C.'Baisinger; Jr:, of counsel to the Board. DECISION AND DIRECTION OF ELECTIONS STATEMENT OF THE CASE Upon petitions duly filed by Local 1652, International Association of Machinists,' herein called the I. A. M., Local B-134, International 1 At the date of the hearing, the I A. M. was an unaffiliated labor organization. There- after, by action taken at the American Federation of Labor convention on October 7, 1943, the I A M. became affiliated with that organization. Pursuant to the request of the I. A. M., that the Board take judicial notice of this fact in connection with all matters coming before it or pending in which the I. A. M. has an interest, we hereinafter refer to the I. A. 11l as an affiliate of the American Federation of Labor and hereby order all formal papers filed herein corrected. 53 N. L. R. B., No. 85. 486 60UG^,A,S ADR'Ct.'AFT COMIIA&Y,' IINC. 487 Brotherhoo&of Electrical .Workers, A. F. of L., herein cilled the LB. E: W., Gaapenters District Council bf Chicago, A. F. of L., herein 'called 'the Carpenters; and Steamiittei Protective Association; Local 597, ' affiliated W"' United Association of Journeymen, Plumbers & Steam Fitters of U. S. and Canada, A. F. of L., herein called the Pipe-- fitters,' respectively, alleging that questions affecting commerce' had arisen cbncernixig'the representation of employees of Douglas Aircraft Company, Inc., at Park Ridge, Illinois, the National Labor Relations Board consolidated the cases and provided for an appropriate hearing upon due notice before C. W. Whittemore,. Trial Examiner. The hearing was held at Chicago, Illinois, on September 1, 2; aiid 3, 1943. The Company, the 1'. A. M., the I. B. E. W., the Ca'rpenters; the Pipe- fitters, United Automobile, Aiiclaft aiid Agricultural Irirplement Wo'r'kers of 'Amerce. (UAW-CIO), herein called the C. I. 0., American Power Association, Independent, herein called the Asso- ciation, and International Union of Operating Engineers, Local 399, A. F. ' of 'L".; 'herein called the Operating Engineers, 'appear'ed, pa'r'ticipated; and were • afforded full opportunity to be heard, to examine and cross-examine witnes'se's, and t'o' introduce evidence bearing on the issues. ' The Trial Examiner reserved ruling upon the motions of the I. A. M. and the C. L O. to dismiss all other petitions and the claims of intervenors requesting less than' a plant-wide unit. For rea'son's appearing in Section IV, infra, we hereby'd'eriy said mo- tions. The Pipefitters moved to dismiss the petition of the I. A. M. and 'the' claim of the' C. I: O: oh the ground that only craft units are appop'iat'e:' T'h'e, Trial Egaihiher also reserved ruling upbri thia 'Notion, for the Board. For ieasons appearing in Section IV; infra, we hereby deny said motion. The Trial Examiner's rulings made at the B'e'ring are free from prejudicial error and are hereby affirmed. All parties were afforded'an opportunity to file b'rief's with the Board. Upon the entire ripcord in the case, the Eoard "makes the following : FINDINOS'OF FACT I. THE BUSINESS OF THE COMPANY Douglas Aircraft Company, Inc., is a Delaware corporation engaged in the manufacture of aircraft and aircraft parts, which operates a number, of plant's in several States I of the United States. This pro- ceeding concerns on]y its plant at Park Ridge, Illinois, known as the Chicago Plant. This plant is owned by the United States Government and operated by, the Company under a cost-plus fixed fee contract. All employees at' the Chicago Plant are employed by the Company. During the 3-month period ending,May 31,1943, raw materials amount- ing in value to more than $1,000,000 were used at the Chicago Plant, 488 DECISIONS OF, NATIONAL LABOR RELATIONS BOARD of which approximately 80 percent was.shipped to the plant from points outside the State' of. Illinois. During the period from June 1943 through December 1943 the, Company,will deliver aircraft and aircraft parts amounting in value to over $5,000,000, from its Chicago Plant to the United States Army Air Force for use,throughout the world. The Company admits that at its Chicago Plant it is engaged in commerce within the meaning of the National. Labor, Relations Act. , , - , II. THE ORGANIZATIONS INVOLVED . , I, Local 1652, International, Association of Machinists, is a, labor organization' affiliated with the American Federation of Labor, ad- mitting to membership employees-of the Company. Local B-134, International Brotherhood, of Electrical Workers, is a labor organization affiliated with the American Federation of Labor, ; admitting to membership employees of the Company-, Carpenters District Council of Chicago, is . a labor organization affiliated with the American Federation of Labor, admitting to mem- bership employees of the Company. , Steamfitters Protective Association,,Local 597, affiliated with United Association of Journeymen, Plumbers & Steam Fitters of United States and Canada, is a labor organization affiliated with the American Federation of Labor, admitting ,to membership employees of the Company. - „ ' , , ' , _ United Automobile, Aircraft and Agricultural Implement Workers of America (UAW-CIO) is a labor organization. affiliated ,with the Congress of Industrial Organizations, admitting to membership em- ployees of the Company. American Power Association, Independent, is an organization ad- mitting to membership employees of the, Company. - International Union of Operating Engineers, Local 399,'is a labor organization affiliated with the American Federation of Labor, ad- mitting to membership employees of the Company. III. THE QUESTIONS CONCERNING REPRESENTATION At the hearing 'the' parties stipulated that prior to' the hearing the I. A. M., the L B. E.W., the Carpenters, and the Pipefitters had each requested the Company to recognize it as the exclusive bargaining representative of the employees within the unit which it claims to be appropriate, and that the Company refuses to accord such recogni- tion to any of the above organizations unless and until it is certified by the Board. During the hearing similar requests were made by'the C. I. O:, the Association, and' the Operating Engineers, but the Com- pany likewise refused to recognize any of these' organizations. DOUGLAS AIRCRAFT COMPANY, INC. 489 At the hearing the I. A. M., the I. B. E. W., the, Carpenters, the Pipefitters, the C. I. 0., and the Operating Engineers challenged the existence of the Association as a labor organization within the mean- ing of the Act. The record indicates that the American Power Asso- ciation was formed in 1938 by Charles F. Parkinson, who until a few days before the hea:cing in this proceeding was the plant engineer of the Company's Chicago Plant. While holding this executive position with the Company, according to his testimony, he formed a Chicago branch of the American Power Association at the Company's Chicago Plant. This branch is designated in its constitution as the Douglas Aircraft Unit of the American Power Association, and admits to membership all. employees of the Company in the Chicago Plant's power plant except the supervisor. Inasmuch as the ,Douglas Air- craft Unit of the American Power Association was admittedly con- ceived and organized by Parkinson at the time he held an executive position with the Company, it cannot be considered a bona fide repre- sentative of employees of the Company for the purposes of collective bargaining. Under the Act we cannot certify an organization as representative of employees for the purposes of collective bargaining when it is apparent that the organization is incapable of bargaining at arms length with the employer.2 Accordingly, we hereby deny the claim of the American Power Association as to appropriate unit and shall not'afford it a place on the ballot in any of the elections here- inafter directed among the employees of the Company. ' A statement by the Regional Director supplemented by a state- ment made at the hearing by the Board's counsel shows that the I. A. M., and the C. I. 0., together represent a substantial number of employees in the unit they contend is appropriate and that the I. B. E. W., the Carpenters, and the Pipefitters each represents a sub- stantial number of employees in the unit it claims to be appropriate.3 2 See Matter of Phelps Dodge Corporation, United Verde Branch, 6, N L. R B 624 ; Matter of New York Merchandise Company, Inc., et al, 50 N. L. R. B 41. • s The following tabulation sets forth the statements of the Regional Director and the Board's attorney concerning the authorization evidence submitted by the participating labor organizations: Unit requested Number I. A. M. C. 1. O. I B. E W. Car- pe Pell- Steam Operat- m g ters fitters i. En neers Plant-wide Unit ------------- 100% 27 09% 21.67% ------------ -------- -------- ------- Unit requested by I . B.E.W_ 145 26 5 76 Unit requested by Carpen- __ ___ _ ______ ters-------- ---------------- 122 26 6 --------- 78 -- Unit requested byPipefitters _ 107 12 10 -- --- ---- --- _ - -- At the hearing the Company, the I. A. M., the C. I. 0., the Carpenters , the Pipefitters, and the I. B. E. W. stipulated that each of these labor organizations has made a sufficient showing of membership within the group which it alleges comprises an appropriate unit to give rise to a question concerning representation. 1 490 DECISIONS. OF NATIONAL LABOR RELATIONS BOARD We find that questions affecting commerce have arisen concerping the representation of employees of the Company, within the meaning of Section 9 (c) and Section 2 (6) and (7) of'the tact. IV. THE APPROPRIATE UNIT THE DETERMINATION O1 REPRESENTATIVES In Case No. 13-R--1716, the I. A. M. and the C. I. 0. seek a unit com- prised of all employees at the Chicago Plant, including plant clerks and trainees in the plant, but excluding executives, administrative.,' technical and engineering department employees, guards, drivers employed in the' transportation division, professional employees; Ace clerical employees, and supervisory employees above the classifi- cation of leadm'en "C." The Company has no objection to this unit. In the manufacture of aircraft and aircraft parts, the Company operates its Chicago Plant on a departmental basis as an integrated manufacturing unit. In the main each of the, craft unions herein involved. seeks a unit comprised of the employees in the plant's main- tenance department who are within its jurisdiction. Their respective contentions will be discussed below. As to the unit proposed by the I. B. E. W. In Case No. 13-8-1913 the I. B. E. W. requests a unit comprised of all electrical construction and maintenance employees , motor wind- ers, electrical lubricators , electrical operators in the master substation, and radio operators in department 123 of the Chicago Plant ; includ- ing trainees and helpers , ' but excluding clerical employees and su- pervisory employees above the classification of leadmen . "A.'" This unit is comprised of approximately 145 employees, the majority of whom are assigned to the electrical maintenance department blown as Department M-702. In this department are electricians and elec- trical maintenance employees, who are classified by the Company as "A," `,B," qpd "c" electricians, depending upon them experiepee in the trade. The "B " electricians were formerly known as electrical- oilers or lubricators, which is the term employed by the I. B. E. W. in its unit request. The Company has no classification called motor winders, but this work is done by various maintenance electricians in this department. Neither has the Company a classification spe- cifically designated as electrical operators in the master substation, but electrical maintenance employees of Department M-702 are as- signed to perform electrical maintenance work in the substation, or powerhouse, at various times. The powerhoi.}se is a separate build- ing from the assembly plant which houses the electrical maintenance department. 4lt4ough the same electrician is usually assigned to the DOUGLAS AIRCRAFT COMPANY, INC. 491 powerhouse, he reports each morning to Department M402. The radio operators whom the I. B. E. W. also desires to represent ire employed in Department 123, known as the Flight Section. They are permanently assigned to Department 123 and are under the sepa- rate supervision of the,ohief test pilot. In the absence of arty history of collective bargaining an qng the Company's employees at the Chicago Plant, and in view of the fact that the maintenance electricians are a skilled, homogeneous, and functionally distinct group of employees, typically represented by craft organizations for the purposes of collective bargaining, tive are of the opinion that these employees may appropriately form a sepa rate bargaining unit if they so desire. It is also evident, on the other hand, that, they might properly form a part of the broader produc- t}on and it aintgnasice unit' advocated by the C. I. O. and the I. A. M. air determination of the unit issue with respect to these employees will depend in part on the desires of the employees themselves, to be expressed in 'the election hereinafter directed. We shall exclude froip the voting group the radio operators in Department 123, since their,wp1r.k is entirely hnrel^,ted to that of the other employees in the proposed unit. There remains for consideration the question whether leadmen may pl;oerly be inclltded in the voting group. A salaried supervisor and assistant slpervisor are in charge of Department M-702. Under these supervisors are leadmen "A," "B," and "C," each of whom is an hourly paid employee. Leadmen "C" are working employees who are in charge of from 4 to 12 men. A leadman "C" receives orders from a le adman "B," who may have under him from 1 to 6 leadmen "C." The 'B" leadman in turn receives instructions from an "A""leadman, who may Kaye from 1 to 6 "B" leadmen under him. The "C" leadmen have np power to hire or discharge the employees wider them, but being in intimate contact with groups of employees 'they make out employee analysis charts, wich may be used by the "B" or "A" lead- . in malting recopunendat}ons 4s to hiring or discharging of em- ployees. Ap "A" leadman is required to spend approximately 30 per- cent of his time at his trade in an advisory capacity on the specific jobs; the ``$" .leadman inust spend about 49, percent of his time in this capacity; while the "C" leadman works at his trade all, of the tine. The "A" leadn n delegate jobs to various "B" leadmen and are chosen because of their ability to handle men. The Company's plant engineer,, Vho is in charge of the various maintenance dpart- ments throughout the plant, testified that he considered leadineil "A'.' and `B'; to be supervisory employees who in other plants would be designated as foremen and assistant foremen. The various other 492 DECISIONS OF NATIONAL LABOR RELATIONS BOARD production and maintenance departments throughout the plan;, em- ploy `A," "B," and "C" leadmen who exercise substantially the same authority as do the leadmen in the electrical maintenance depart- ment and, as noted above, the C. 1. 0., the I. A. M., and the Company agree that leadmen "A" and "B" should be excluded from the produc- tion and maintenance unit requested by the two last named labor or- ganizations. On the basis of the above facts we conclude that lead-' men "A" and "B" are supervisory employees while the leadmen "C" are not. Accordingly, we shall include leadmen "C" in• the elec- trician's voting group, but shall exclude leadmen "A" and "B." As to the unit proposed by,the Carpenters In' Case No. 13-R-1951 the Carpenters requests a bargaining•uhit comprised of all carpenters and woodworkers employed in the- Coin= pany's Chicago Plant, including trainees or apprentices, but exclizd- iug helpers, clerical employees, and supervisory employees above the classification of leadmen "A." This proposed unit includes approxi- mately 106 maintenance carpenters in Department M-704 and 16 woodworkers in department 431 known as the Wood Shop. The Com-_ pany lists its maintenance carpenters and painters under the same department since their work is inter-related. The Carpenters, how- ever, does not desire to include the painters in the unit it seeks to es- tablish. The woodworkers whom the Carpenters claims to represent are not maintenance carpenters but work in the production depart- ment known as the Wood Shop where they produce wooden parts •fbr airplanes. The maintenance carpenters are employed in a, service department as distinguished from a production department. The Carpenters submitted no' evidence of representation with respect-6 the woodworkers. In view of the apparent disparity in the func- tions of these two groups of employees we are of the opinion that the upit proposed by the carpenters is inappropriate insofar as it in- cludes the woodworkers in the Wood Shop. For the same reasons as those which governed our decision as to the maintenance electricians, we are of the opinion that the mainte- nance carpenters may appropriately form a separate unit for the pur- poses of collective bargaining. On the other hand, the record indicates that the work of these employees is integrated with the general main- tenance operations of the Chicago Plant, and that the interests -of these employees to a considerable extent are- aligned with those of other maintenance workers of the plant. We shall therefore base our determination of the unit issue with respect to this group, -at least in part, upon the desires of the employees involved' as expressed in the election hereinafter directed. DOUGLAS AIRCRAFT COMPANY, INC. 493 The Carpenters desire to incluude trainees but exclude helpers in the proposed unit. Trainee is the classification given to an inexperienced carpenter. After 16 weeks experience as a trainee the employee so classified may become a helper and after 2 months as a helper he may become a maintenance carpenter class "C." The record indicates that at least three trainees were employed in Department M-704 on or about the date of the hearing; however, the evidence is not clear with respect to whether this department employed any helpers at that time. It appears safe to assume that after 16 weeks these trainees will be reclassified as helpers. Since the Carpenters seeks to represent maintenance carpenter trainees and maintenance carpenters, there appears no valid reason for excluding the intermediate category of maintenance carpenter helpers, if any, from the .voting group. Ac- cordingly, we shall include both trainees and helpers, if any, in the voting group of maintenance carpenters. Since leadmen "A," "B," and "C" function in the same capacity in Department M-704' as they do in the electrical maintenance department, we shall include leadmen "C" in the voting group of maintenance carpenters but exclude lead- men "A" and "B" for the reasons set forth in our discussion of the electricians' unit. As .to the unit proposed by the Pipe fitters- In Case No. 13-R-1965 the Pipefitters contends that all mainte- nance pipefitters and plumbers and their helpers employed at the Chicago Plant, ' excluding clerical employees and supervisory em- ployees above the classification of leadmen "A" constitute an appro- priate bargaining unit. There are approximately 107 employees in the unit sought by the Pipefitters. These employees are employed within the Company's department designated as Department 706, which is comprised of pipefitters, plumbers, repairmen, helpers, and sheet metal workers. The plumbers maintain equipment for utilities such as gas, air, water, steam, and sewers. The pipefitters work with the,plumbers in such maintenance work. ' Repairmen make repairs on small air-operated tools. The sheet metal workers spend about 10 percent of their time working. with the plumbers and their helpers, and the remainder of their time is spent at machines in Department 706 where they, process material for the production departments and crafts other than plumbers and pipefitters. The Pipefitters would exclude the sheet metal workers from the craft unit which it'claims is appropriate, since they are not eligible for membership in the Pipefitters' organization. Since the sheet metal workers spend the majority of their time per- forming'workcfor production departments and crafts other than the pipefitters, we shall exclude them from the voting group. The Pipe- 559018-44-vol. 53-33 494 DECISIONS OF NATIONAL LABOR RELATIONS BOARD fitters, like the Carpenters, desire to include all leadmen in its 'craft unit. The leadmen in this department exercise the same power and authority' as do the ' leadmen in the various other production and maintenance departments. For reasons stated above in our discussion of'the I. B: E. W.'s unit claim, we shall exclude leadmen "A" and `B" from tile' voting -group herein, but shall include leadmen "C." We conclude' that the maintenance pipefitters and plumbers and their helper`s employed in the Chicago Plant's Department 706f excluding clerical -employees, sheet metal workers, and leadmen "A" and "B," niay function as a separate unit, or be included in the plant-wide pro- duction and maintenance unit sought by the I. A. M. and the C. I. 0., and 'our determination' of the unit issue with respect to such employees will depend, in part, upon the results of, the elections hereinafter directed. • As to the unit. proposed by the Operating Engineers The Operating Engineers seeks a unit comprised of all assistant supervisors and stationary engineers "A" and "B" employed in the power plant of the Company's Chicago Plant. Since'the Operating Engineers failed to submit any evidence to indicate that it represents any employees within this alleged unit, we shall not consider its claim. Concluding findings Aside from the question of the inclusion of electricians, carpenters, and pipefitters,•the parties are in agreement as to the composition of the production and maintenance unit. We shall make no final deter- mination respecting the appropriate unit or units pending the out- come of the elections hereinafter directed. ;,We shall direct that separate elections be held among (1) all elec- trical maintenance employees employed . at the Company's Chicago Plant, including electrical maintenance employees employed in the master substation of the power plant,.leadmen "C," and trainees and helpers, but excluding radio operators, clerical employees, and supervisory employees above the classification • of leadmen "C," to determine whether they desire to be represented by the I. B. E. W., the I. A. M., the C. I. 0., or none; (2) all maintenance carpenters, including trainees, helpers, and leadmen "C," but excluding wood- workers in. department 431, clerical employees and supervisory em- ployees above the. classification of leadmen'"C," to determine whether they desire to' be represented by the Carpenters, the I. A. M., the C. I. O.,7or none; (3) all maintenance pipefitters and plumbers and, their helpers, including leadmen ."C," but excluding clerical em- ployees,.,sheet metal workers, and supervisory employees above the- DOUGLAS AIRCRAFT, COMPANY, INC. 495 classification of leadmen "C," to determine whether they desire to be represented by the Pipefitters, the I. A. M., the C. I. 0., or none; (4) the remaining production and maintenance employees, including leadmen "C," plant clerks, and trainees in the plant, but excluding executive, administrative, technical and engineering department employees, professional employees, office clerical employees, guards, drivers employed in the transportation division and supervisory em- ployees above the classification of leadmen "C," to determine whether they desire to be represented by the I. A. M., the C. I. 0., or neither. We shall direct that the questions concerning representation which have arisen be resolved by means of elections by secret ballot among the employees in the voting groups above set forth, who were employed during the pay-roll period immediately preceding the date of the Direc- tion of Elections herein, subject to the limitations and additions set forth in the Direction. , Each labor organization requested that its name appear on the ballot as it is set forth- in the Direction. DIRECTION OF ELECTIONS By virtue of and pursuant to the power vested in the National Labor Relations Board by Section 9 (c) of the National Labor Relations Act, and pursuant to Article III, Section 9, of National Labor Relations Board Rules and Regulations-Series 2, as amended, it is hereby DIRECTED that, as part of the investigation to ascertain representa- tives for the purposes of collective bargaining with Douglas Aircraft Company, Inc., Park Ridge, Illinois, elections by secret ballot shall be conducted as early as possible, but not later than thirty, (30) days from the-date of this Direction of Elections, under the direction and supervision of the Regional Director for the Thirteenth Region, acting in this matter as agent for the National Labor Relations Board, and subject to Article III, Sections 10 and 11, of said Rules and Regula- tions, among the groups of employees described below who were em- ployed by the Company at its plant in Park Ridge, Illinois, known as the Chicago Plant, during the pay-roll period immediately preceding the date of this Direction of Elections, including employees who did not work during said pay-roll period because they were ill or on vaca- tion or temporarily laid off, and including employees in the armed forces of the United States who present themselves in person at the polls, but excluding employees who have since quit or been discharged for cause and have not been rehired or reinstated prior to the election among : (1) All electrical maintenance employees employed at the Com- pany's Chicago Plant, including electrical maintenance employees employed in the master substation of the power plant, and leadmen "C," but excluding radio operators, clerical employees, and supervisory 496 DECISIONS OF NATIONAL LABOR RELATIONS BOARD employees above the classification of leadmen "C," to determine whether they desire to be represented by International Brotherhood of Electrical Workers, Local B-134, A. F. of L., International Asso- ciation of Machinists, A. F. L., United Automobile , Aircraft and Agri- cultural Implement Workers of America (UAW-CIO ), for the pur- poses of collective bargaining, or by none; (2) All maintenance carpenters , including leadmen "C," trainees and helpers, but excluding woodworkers in department 431, clerical employees, and supervisory employees above the classification of lead- men "C," to determine whether they desire to be represented by Car penters District Council of Chicago, A . F. of L., International Asso- ciation of Machinists, A. F. L., United Automobile , Aircraft and Agricultural Implement Workers of America (UAW-CIO), for the purposes of collective bargaining , or by none; (3) All pipefitters and plumbers and their helpers , including lead- men "C," but excluding clerical employees , sheet metal workers, and supervisory employees above the classification of leadmen "C," to de- termine whether they desire to be represented by United Association of Journeymen, Plumbers & Steam Fitters of the United States and Canada, Local 597, A. F. of L., International Association of Machin- ists, A. F. L., United Automobile, Aircraft and Agricultural Imple- ment Workers of America (UAW-CIO), for the purposes of collective bargaining, or by none; (4) The remaining production and maintenance employees, includ- ing leadmen "C," plant clerks, and trainees in the plant, but excluding executives, administrative, technical and engineering department em- ployees, professional employees , office clerical employees, guards, drivers employed in the transportation division , and supervisory em- ployees above the classification of leadmen "C," to determine whether they desire to be represented by International Association of Machin- ists, A. F. L., United Automobile , Aircraft and Agricultural Imple- ment Workers of America (UAW-CIO), for the purposes of collec- tive bargaining, or by neither.