SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
17	SPECIAL TRADE CONTRACTORS	2,858
26	PAPER AND ALLIED PRODUCTS	24
28	CHEMICALS AND ALLIED PRODUCTS	286	48
29	PETROLEUM AND COAL PRODUCTS	1,082
30	RUBBER AND MISC. PLASTICS PRODUCTS	42
32	STONE, CLAY, AND GLASS PRODUCTS	36	6
34	FABRICATED METAL PRODUCTS	150
35	MACHINERY, EXCEPT ELECTRICAL	120	12
37	TRANSPORTATION EQUIPMENT	374	187
40	RAILROAD TRANSPORTATION	436
73	BUSINESS SERVICES	722
TOTAL		6,130	253

*(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.