Past but not gone: Building the Port Mann Water Supply Tunnel.
http://www.metrovancouver.org/media-room/video-gallery/the-sustainable-region/230070643
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Metro Vancouver is a federation of 21 municipalities, one Electoral Area and one Treaty First Nation that collaboratively plans for and delivers regional-scale services. Its core services are drinking water, wastewater treatment and solid waste...
cover tunnel photo by: Matt Brown from London, England / CC BY
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