SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	2,227
17	SPECIAL TRADE CONTRACTORS	2,858
26	PAPER AND ALLIED PRODUCTS	24
29	PETROLEUM AND COAL PRODUCTS	147
34	FABRICATED METAL PRODUCTS	150
40	RAILROAD TRANSPORTATION	436
51	WHOLESALE TRADE - NONDURABLE GOODS	2,844
73	BUSINESS SERVICES	722
TOTAL		9,407

*(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.