NATIONAL LABOR RELATIONS BOARD

162 THIRD ANNUAL REPORT OF NATIONAL LABOR RELATIONS BOARD
a labor organization. 93 Similarly, the fact that certain employees are
covered by a separate collective bargaining contract tends to show
that they should not be included in a larger unit. 94 Thus, in Matter
of Pittsburgh Plate Glass Company," the fact that the company's
truck drivers and its highly skilled glaziers had for many years been
covered by closed shop contracts between the company and two labor
organizations, was a reason for their exclusion from an appropriate
unit for production workers generally.
In Matter of S. Blechman & Sons, Inc.," the Board excluded certain
supervisory and confidential employees from the appropriate unit
for the respondent's employees generally, giving, as one reason, the
fact that an agreement between the respondent and the union for the
holding of a consent election had provided that such employees should
not participate.
In Matter of American Oil Company, where it was held that the
company's employees at two of its plants constituted one rather than
four appropriate units, the Board noted that the company had bargained
with the union on the basis of a single unit at certain of its
other plants.
Finally, the Board has considered the methods of collective bargaining
which have been successful in the industry involved as a
whole. In Matter of American Steel & Wire Company," the question
at issue was whether the unit should be limited to a single plant,
as contended by one union, or whether a broader unit was appropriate,
as contended by another. The Board, in holding that a single plant
unit was not appropriate, said:
In determining an appropriate unit we look not only to the history of collective
bargaining with the particular employer, but also to the methods which
have been used elsewhere in the same industry. We take judicial notice, therefore,
that at the time the Company signed with the Steel Workers' Organizing
Committee a number of other subsidiaries of United States Steel Corporation
03 Matter of Great Lakes Engineering Works and Welders International Association,
5 N. L. R. B. 788; Matter of Wisconsin Power and Light Company and United Electrical,
Radio and Machine Workers of America, Local No. 1184, 6 N. L. R. B. 320; Matter of Des
Moines Steel Company and Lodge 2071, Amalgamated Association of Iron, Steel & Tin
Workers of North America, through Steel Workers Organizing Committee, affiliated with
C. I. O., 6 N. L. R. B. 532; Matter of Rex Manufacturing CO., Inc. and A. F. of L. Federal
Local Union No. 20893, 7 N. L. R. B. 95; Matter of Alaska Packers Association
and Alaska Cannery Workers Union Local No. 5, Committee for Industrial Organization,
7 N. L. R. B. 141; Matter of Fisher Body Corporation and United Automobile Workers
of America, Local 76, 7 N. L. R. B. 1083; and Matter of Jacob A. Hunkele, Trading
as Tri-State Towel Service of the Independent Towel Supply Company and Local No. 40
United Laundry Workers Union, 7 N. L. R. B. 1276.
°' of International Freighing Corp. et al. and International Seamen's Union of
America, 3 N. L. R. B. 692; Matter of General Mills, Inc., doing business under the trade
name of Washburn Crosby Company and Flour, Feed, and Cereal Workers Federal Union
No. 19184, and United Grain and Cereal Workers, Local No. 240, 3 N. L. R. B. 730; Matter
of The Pd. Neuer Glass Company and Federation of Flat Glass Workers of America, 4 N.
L. It. B. 65; Matter of Pittsburgh Plate Glass Company and Federation of Flat Glass
Workers of America, 4 N. L. R. B. 193 ; Matter of Zenite Metal Corporation and United
Automobile Workers of America, Local No. 442, 5 N. L. R. B. 509; Matter of J. J. Little &
Ives Company and Bindery Women's Union Local No. 43, 6 N. L. It. B. 411; and Matter
of The International Nickel Company, Inc. and Square Deal Lodge No. 40, Amalgamated
Association of Iron, Steel and Tin Workers of North America, through Steel Workers
Organizing Committee, 7 N. L. It. B. 46.
1,6 Matter of Pittsburgh Plate Glass Company and Federation of Flat Glass Workers of
America, 4 N. L. R. B. 193.
Matter of S. Blechman & Sons, Inc. and United Wholesale Employees of New York,
Local 65, Textile Workers Organizing Committee—Committee for Industrial Organization,
4 N. L. R. B. 15.
• Matter of American Oil Company and Oil Workers' International Union, 7 N. L. R.
B. 210.
• Matter of American Steel & Wire Company and Steel and Wire Workers Protective
Association, 5 N. L. R. B. 871.