SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	9,546
15	GENERAL BUILDING CONTRACTORS	979
16	HEAVY CONSTRUCTION CONTRACTORS	18,303	225
17	SPECIAL TRADE CONTRACTORS	1,812
20	FOOD AND KINDRED PRODUCTS	2,018
22	TEXTILE MILL PRODUCTS	1,102	245
24	LUMBER AND WOOD PRODUCTS	7,400	179
26	PAPER AND ALLIED PRODUCTS	130
27	PRINTING AND PUBLISHING	456	40
28	CHEMICALS AND ALLIED PRODUCTS	418
32	STONE, CLAY, AND GLASS PRODUCTS	1,464	985
33	PRIMARY METAL INDUSTRIES	85
34	FABRICATED METAL PRODUCTS	16
35	MACHINERY, EXCEPT ELECTRICAL	396
37	TRANSPORTATION EQUIPMENT	6,675	305
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	250
42	TRUCKING AND WAREHOUSING	3,569
44	WATER TRANSPORTATION	1,752
49	ELECTRIC, GAS, AND SANITARY SERVICES	1,253
50	WHOLESALE TRADE - DURABLE GOODS	6,456
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	6,607
76	MISCELLANEOUS REPAIR SERVICES	2,844
80	HEALTH SERVICES	347
TOTAL		73,876	1,980

*(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.