SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
24	LUMBER AND WOOD PRODUCTS	538
28	CHEMICALS AND ALLIED PRODUCTS	1,108	31
34	FABRICATED METAL PRODUCTS	568	248
35	MACHINERY, EXCEPT ELECTRICAL	3,968	3,527
36	ELECTRIC AND ELECTRONIC EQUIPMENT	1,381	493
37	TRANSPORTATION EQUIPMENT	3,738	515
45	TRANSPORTATION BY AIR	3,317
49	ELECTRIC, GAS, AND SANITARY SERVICES	558
80	HEALTH SERVICES	254	174
TOTAL		15,429	4,988

*(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.