Since 2001 there have been 61 accidents involving tower cranes [in the UK]. 9 people have died, and 25 have been seriously injured.
I don't know why they chose that year, perhaps in response to the highly publicised crash in London in 2000 which claimed 3 lives [2]
[1] http://www.hse.gov.uk/construction/safetytopics/cranes.htm
[2] http://www.hse.gov.uk/construction/crane/
https://en.wikipedia.org/wiki/Vauxhall_helicopter_crash
Since 2001 there have been 61 accidents involving tower cranes [in the UK]. 9 people have died, and 25 have been seriously injured.
I don't know why they chose that year, perhaps in response to the highly publicised crash in London in 2000 which claimed 3 lives [2]
[1] http://www.hse.gov.uk/construction/safetytopics/cranes.htm
[2] http://www.hse.gov.uk/construction/crane/