References
Canadian Standards Association. (2010). Management of work in confined spaces. [Book]. Mississauga, Ont: Canadian Standards Association.
Government of Canada. (2015). Canada occupational health and safety regulations. [Document]. Retrieved from http://laws.justice.gc.ca/eng/regulations/sor-86- 304/index.html
Infrastructure Health and Safety Association. (2002). Construction health and safety manual. [Manual]. Ontario: Infrastructure Health and Safety Association.
Microsoft word. (2007). Clipart. [Images]. Used under rights to use and distribute for non-commercial purposes with software license.
Occupational Health & Safety Division. (2011). Reference guide: Occupational safety general regulations. [Document]. Nova Scotia Labour and Advanced Education. Retrieved from https://www.novascotia.ca/lae/healthandsafety/docs/OSGR.pdf