1. Site safety handbook;Bielby,1992
2. BS 5973: 1993 code of practice for access and working scaffolds and special scaffolds in steel;British Standards Institute [BSI],1993
3. Fatal workplace injuries in 2000: A collection of data and analysis;Bureau of Labor Statistics,2001
4. Fatal occupational falls in the US construction industry, 1980–1989;Cattledge;Accident Analysis and Prevention,1996
5. Non-fatal occupational fall injuries in the West Virginia construction industry;Cattledge;Accident Analysis and Prevention,1996