Eisenhower memorial tunnel. Edwin C. Johnson Bore Bids are to be opened May 29 on the initial contract for the second bore of the Eisenhower Memorial Tunnel. RMN My 6, 1975 p.11. 2nd bore will probably rise at least 10 million beyond earlier estimates of $116 million for the project. Post Je 5, 1975 p.2 Two bids submitted for major mining and support work on second bore. Post Ag 8, 1975 p.39 Contract awarded for 2nd tunnel. RMN Ag 12, 1975 p.6 Post Ag 12, 1975:p.26
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