Eisenhower memorial tunnel Exhaust ventilation system improved. RMN F 24, 1972 p.18 Holing through east and west bores expected early in, week; background. Post F 28, 1972 p.25,28 Will be renamed Eisenhower Memorial Tunnel. FM Ap 7, 1972 p.8 Post Ap 7, 1972 p.17 Janet Bonnema, engineering technician riot allowed in Straight Creek Tunnel because of old supersition, RMN Ap 10, 1972 p.42
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