[Discuss] OT: insurance for outdoor work

[sronan at panix.com (Stephen Ronan)]

There's a small, talented group of IT professionals in the Boston 
area who are volunteering to help repair, enhance, and maintain a 
wireless network serving residents of a low-income housing 
development... the work includes replacing some Ethernet cable 
and wireless access points in the center of a wide, flat roof.

The obstacle is that the property management need any such work 
to be performed by licensed, bonded personnel. I wonder if any of 
you know how much it would cost to insure one or more people to 
perform that kind of activity... if, say, an existing nonprofit 
were to act as an umbrella for these and related ongoing 
volunteer activities, how much might it cost them in insurance?

Thanks,
   Stephen