Occupational Outlook Quarterly. Archived from the original (PDF) on February 3, 2013. Retrieved December 6, 2013. ↑ http://www.rcrnews.com/apps/pbcs.dll/article?AID=/20080709/FREE/539166731/1098 ↑ http://www.propublica.org/article/cell-tower-fatalities ↑ "In Race For Better Cell Service, Men Who Climb Towers Pay With Their Lives - ProPublica". propublica.org.