SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
17	SPECIAL TRADE CONTRACTORS	2,858
24	LUMBER AND WOOD PRODUCTS	1,299
26	PAPER AND ALLIED PRODUCTS	132
28	CHEMICALS AND ALLIED PRODUCTS	8,400	832
33	PRIMARY METAL INDUSTRIES	488
34	FABRICATED METAL PRODUCTS	651
35	MACHINERY, EXCEPT ELECTRICAL	55	29
37	TRANSPORTATION EQUIPMENT	4,326	536
40	RAILROAD TRANSPORTATION	436
45	TRANSPORTATION BY AIR	7,916	57
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	853	427
73	BUSINESS SERVICES	1,345
80	HEALTH SERVICES	120	120
TOTAL		28,879	2,001

*(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.