SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
07	AGRICULTURAL SERVICES	4,714
13	OIL AND GAS EXTRACTION	5,559
15	GENERAL BUILDING CONTRACTORS	41,629	208
16	HEAVY CONSTRUCTION CONTRACTORS	37,952	597
17	SPECIAL TRADE CONTRACTORS	95,534
20	FOOD AND KINDRED PRODUCTS	21,626	50
21	TOBACCO MANUFACTURERS	51
22	TEXTILE MILL PRODUCTS	315
23	APPAREL AND OTHER TEXTILE PRODUCTS	380	144
24	LUMBER AND WOOD PRODUCTS	10,289
25	FURNITURE AND FIXTURES	301
26	PAPER AND ALLIED PRODUCTS	3,189	7
27	PRINTING AND PUBLISHING	7,477	603
28	CHEMICALS AND ALLIED PRODUCTS	1,590	19
29	PETROLEUM AND COAL PRODUCTS	34,321	1,304
30	RUBBER AND MISC. PLASTICS PRODUCTS	744	37
32	STONE, CLAY, AND GLASS PRODUCTS	6,815
33	PRIMARY METAL INDUSTRIES	4,191	28
34	FABRICATED METAL PRODUCTS	12,779	675
35	MACHINERY, EXCEPT ELECTRICAL	23,226	5,806
36	ELECTRIC AND ELECTRONIC EQUIPMENT	1,474	61
37	TRANSPORTATION EQUIPMENT	5,939
38	INSTRUMENTS AND RELATED PRODUCTS	615	221
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	942	354
40	RAILROAD TRANSPORTATION	1,065
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	30,094	16,281
42	TRUCKING AND WAREHOUSING	43,479	59
44	WATER TRANSPORTATION	18,546	332
45	TRANSPORTATION BY AIR	18,978	545
46	PIPE LINES, EXCEPT NATURAL GAS	4,190
49	ELECTRIC, GAS, AND SANITARY SERVICES	24,954	116
50	WHOLESALE TRADE - DURABLE GOODS	41,486	1,938
51	WHOLESALE TRADE - NONDURABLE GOODS	31,391	4,783
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	143,371	22,475
72	PERSONAL SERVICES	3,801	43
73	BUSINESS SERVICES	7,905	1,258
75	AUTO REPAIR, SERVICES, AND GARAGES	39,581
76	MISCELLANEOUS REPAIR SERVICES	3,522	362
80	HEALTH SERVICES	3,209	1,005
84	MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS	1,190	365
TOTAL		738,881	59,676

*(1) By survey design, not all 2-digit SICs were surveyed. (2) The estimates for each 2-digit SIC apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC. Not all SICs were surveyed. (3) When using the estimates, standard errors associated with estimates should be considered. (4) Potential exposures to a chemical agent are categorized as actual (i.e., the surveyor observed the use of the specific agent) or tradename (i.e., the surveyor observed the use of a tradename product known to contain the specific agent). The estimates presented in the table combine both categories.