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POWER

Hydro Quebec, a source of electricity for Consolidated Edison.
www.gmpvt.com/annrpt95/hydro.htm

SEWAGE

The North River Sewage Treatment plant.
www.pirnie.com/readings/air_crnt/ac0296_3.htm

TRANSPORTATION

New York City transit past and present. A rich site with terrific links.
wt.mit.edu/Subway/

Subway trains, track, rail—everything for the train and subway enthusiast.
www.nycsubway.org/