NATIONAL LABOR RELATIONS BOARD

Metal mining
Coal mining
Crude petroleum and natural gas production
Nonmetallic mining and quarrying
53
118 13
59
. 6
1.3 .1
. 7
17, 429
41, 590
2,395
5,431
:construction
60 .7 33,002 1.4 45 .9 31, 229 2.1 15 .3 1,953 .2
Vholesale trade
645 7.1 41,509 1.7 349 7. 2 28, 350 1. 9 296 6. 8 17, 186 1.4
/etail trade 315 3.4 75, 653 3. 2 226 4. 7 64, 159 4. 4 89 2. 1 16, 462 1. 4
Pinanca, insurance, and real estate 132 1.4 16, 786 . 7 56 1.2 12, 330 .8 76 1.7 4,45(3 .4
Transportation, communication, and other public utilities 889 9.7 153, 044 (3.4 477 9.9 92, 200 6.3 412 9.5 69, 390 5.7
Motor bus transportation 52 .0 4,509 .2 34 .7 2,812 .2 18 .4 2,618 .2
Motor truck transportation 192 2.1 6,085 .3 141 2.9 ' 5, 157 .4 51 1.2 1,215 .1
Water transportation 245 2.7 28,620 1.2 168 3.5 21, 010 1.4 77 1.8 8,732 .7
Warehousing and storage 46 .5 1, 796 . 1 18 . 4 590 28 .6 1, 475 . 1
Other transportation 19 .1 1,026 ' 5 . 1 443 14 .3 1,106 . 1
Communications 228 2.5 67, 238 2.8 57 1.2 32, 015 2.2 171 3.9 36, 089 3.0
Heat, light, power, water, and sanitary services 107 1.2 43, 770 1.8 54 1.1 30,173 2.1 53 1.2 18, 155 1.5
3erviccs 187 2.0 16,006 . 7 115 2,4 8,797 .6 72 1.7 8,902 .8
Total 0, 151 100.0 2, 373, 361 100.0 4,517 100.0 1, 464, 017 100.0 4,334 100.0 1, 188, 088 100.0
NOM-The number of workers involved in all cases differs from the sum of workers involved in unfair labor practice cases and representation cases because workers involved In
both types of cases at the same time are included in the totals for each typo of case but are included only once in the grand total.
. 7
1.8
. 1
. 2
32
76
8
33
. 7
1.6 .1
. 7
10,655
8,219
2,090
3, 771
. 7
.6 .1
. 3
21
42
5
26
.5
1.0
. 1
. 6
7,341
35, 036
352
2, 525
. 6
2.9
. 2
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