A 20′ dia. concrete-lined tunnel in both earth and rock 18,000′ in length under the St. Lawrence River
May 77 to Sept. 80
Amount: $42M
Client: Montreal Urban Community
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A 20′ dia. concrete-lined tunnel in both earth and rock 18,000′ in length under the St. Lawrence River
May 77 to Sept. 80
Amount: $42M
Client: Montreal Urban Community
