SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
16	HEAVY CONSTRUCTION CONTRACTORS	4,591
20	FOOD AND KINDRED PRODUCTS	1,887	1,217
27	PRINTING AND PUBLISHING	140
28	CHEMICALS AND ALLIED PRODUCTS	2,280	329
34	FABRICATED METAL PRODUCTS	131
37	TRANSPORTATION EQUIPMENT	193	28
72	PERSONAL SERVICES	10,055	6,501
73	BUSINESS SERVICES	93	56
80	HEALTH SERVICES	2,770	1,840
TOTAL		22,140	9,972

*(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.