SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
16	HEAVY CONSTRUCTION CONTRACTORS	9,807	539
17	SPECIAL TRADE CONTRACTORS	746
20	FOOD AND KINDRED PRODUCTS	432
24	LUMBER AND WOOD PRODUCTS	3,609	1,119
26	PAPER AND ALLIED PRODUCTS	1,516
28	CHEMICALS AND ALLIED PRODUCTS	306	6
29	PETROLEUM AND COAL PRODUCTS	1,396
32	STONE, CLAY, AND GLASS PRODUCTS	1,408
33	PRIMARY METAL INDUSTRIES	3,354	77
34	FABRICATED METAL PRODUCTS	4,225
35	MACHINERY, EXCEPT ELECTRICAL	9,736
36	ELECTRIC AND ELECTRONIC EQUIPMENT	645
37	TRANSPORTATION EQUIPMENT	2,318	3
38	INSTRUMENTS AND RELATED PRODUCTS	157
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	1,866	454
50	WHOLESALE TRADE - DURABLE GOODS	22,511	742
TOTAL		64,032	2,940

*(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.