Occupational Employment and Wages: Technical Writers
http://www.bls.gov/oes/2008/may/oes273042.htm

U.S. Bureau of Labor Statistics
2008

Abstract:

Write technical materials, such as equipment manuals, appendices, or operating and maintenance instructions. May assist in layout work. Industries with the highest published employment and wages for this occupation are provided. For a list of all industries with employment in this occupation, see the Create Customized Tables function.