[SGVHAK] Fixing a high amperage underground power line

[James McDuffie]

Here is a story I was telling some people about after the HAK meeting
tonight. The URL and title are aptly named because it gives details on
how the LA DWP was able to find a fault in a high amperage power line
buried under Pershing drive and fix it. A fix that was complicated by
the fact that taking it offline would cost the city $13,000 per hour.
The story involves digging large holes in the street, liquid nitrogen,
oil pumps, x-rays, welding and more.

http://www.jwz.org/blog/2002/11/engineering-pornography/