SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	4,843
15	GENERAL BUILDING CONTRACTORS	2,576
16	HEAVY CONSTRUCTION CONTRACTORS	198
17	SPECIAL TRADE CONTRACTORS	1,261
20	FOOD AND KINDRED PRODUCTS	5,248	1,117
22	TEXTILE MILL PRODUCTS	803	147
23	APPAREL AND OTHER TEXTILE PRODUCTS	1,248	1,248
24	LUMBER AND WOOD PRODUCTS	92	7
26	PAPER AND ALLIED PRODUCTS	101
27	PRINTING AND PUBLISHING	6,259	1,462
28	CHEMICALS AND ALLIED PRODUCTS	572	37
29	PETROLEUM AND COAL PRODUCTS	795
30	RUBBER AND MISC. PLASTICS PRODUCTS	20,618	7,026
31	LEATHER AND LEATHER PRODUCTS	1,240	108
33	PRIMARY METAL INDUSTRIES	14,913	4,788
34	FABRICATED METAL PRODUCTS	12,837	1,160
35	MACHINERY, EXCEPT ELECTRICAL	9,969	1,951
36	ELECTRIC AND ELECTRONIC EQUIPMENT	9,789	6,354
37	TRANSPORTATION EQUIPMENT	11,620	588
38	INSTRUMENTS AND RELATED PRODUCTS	843
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	743
40	RAILROAD TRANSPORTATION	44
42	TRUCKING AND WAREHOUSING	2,433	15
44	WATER TRANSPORTATION	16,017	332
45	TRANSPORTATION BY AIR	3,402	3
49	ELECTRIC, GAS, AND SANITARY SERVICES	19,262
72	PERSONAL SERVICES	10,688	4,047
73	BUSINESS SERVICES	13,108	8,586
75	AUTO REPAIR, SERVICES, AND GARAGES	1,563
80	HEALTH SERVICES	50,679	41,057
TOTAL		223,764	80,032

*(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.