Note 13 — Chapter XX · SUBMARINE TUNNELING (Continued).
Reading edition
Condensed from paper by James Forgie, “Eng. News,” Vol. LVI, and by H. B. Hewett and W. L. Brown, “Proc. Am. Soc. C. E.”, Vol. XXXVI.
Reading edition
Condensed from paper by James Forgie, “Eng. News,” Vol. LVI, and by H. B. Hewett and W. L. Brown, “Proc. Am. Soc. C. E.”, Vol. XXXVI.