SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	3,721
15	GENERAL BUILDING CONTRACTORS	1,252
16	HEAVY CONSTRUCTION CONTRACTORS	322	81
17	SPECIAL TRADE CONTRACTORS	26,064
20	FOOD AND KINDRED PRODUCTS	5,208	886
21	TOBACCO MANUFACTURERS	37
22	TEXTILE MILL PRODUCTS	2,476	235
23	APPAREL AND OTHER TEXTILE PRODUCTS	119
24	LUMBER AND WOOD PRODUCTS	2,801	755
26	PAPER AND ALLIED PRODUCTS	3,666
27	PRINTING AND PUBLISHING	3,161	16
28	CHEMICALS AND ALLIED PRODUCTS	5,890
29	PETROLEUM AND COAL PRODUCTS	3,468
30	RUBBER AND MISC. PLASTICS PRODUCTS	3,327	90
32	STONE, CLAY, AND GLASS PRODUCTS	214
33	PRIMARY METAL INDUSTRIES	5,326	37
34	FABRICATED METAL PRODUCTS	4,830
35	MACHINERY, EXCEPT ELECTRICAL	16,829	7,188
36	ELECTRIC AND ELECTRONIC EQUIPMENT	6,621	2,417
37	TRANSPORTATION EQUIPMENT	3,039	163
38	INSTRUMENTS AND RELATED PRODUCTS	2,854	689
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	317
42	TRUCKING AND WAREHOUSING	14,914
45	TRANSPORTATION BY AIR	5,711	329
48	COMMUNICATION	8,364	911
49	ELECTRIC, GAS, AND SANITARY SERVICES	17,366	119
50	WHOLESALE TRADE - DURABLE GOODS	8,681	409
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	8,866
73	BUSINESS SERVICES	584
75	AUTO REPAIR, SERVICES, AND GARAGES	13,916
76	MISCELLANEOUS REPAIR SERVICES	3,932
80	HEALTH SERVICES	8,187	3,209
TOTAL		192,401	17,538

*(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.