SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	323
15	GENERAL BUILDING CONTRACTORS	4,419
17	SPECIAL TRADE CONTRACTORS	8,307
20	FOOD AND KINDRED PRODUCTS	1,397
22	TEXTILE MILL PRODUCTS	1,227
23	APPAREL AND OTHER TEXTILE PRODUCTS	111
24	LUMBER AND WOOD PRODUCTS	45
26	PAPER AND ALLIED PRODUCTS	132
27	PRINTING AND PUBLISHING	1,675
28	CHEMICALS AND ALLIED PRODUCTS	537
29	PETROLEUM AND COAL PRODUCTS	77
30	RUBBER AND MISC. PLASTICS PRODUCTS	108
32	STONE, CLAY, AND GLASS PRODUCTS	990
33	PRIMARY METAL INDUSTRIES	2,928
34	FABRICATED METAL PRODUCTS	532
35	MACHINERY, EXCEPT ELECTRICAL	4,365	31
36	ELECTRIC AND ELECTRONIC EQUIPMENT	257
37	TRANSPORTATION EQUIPMENT	5,146	105
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	592
40	RAILROAD TRANSPORTATION	44
45	TRANSPORTATION BY AIR	342
49	ELECTRIC, GAS, AND SANITARY SERVICES	1,744
50	WHOLESALE TRADE - DURABLE GOODS	20
76	MISCELLANEOUS REPAIR SERVICES	5,979
TOTAL		41,297	136

*(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.