ENGINEER'S INVENTION. —A new method of tunnelling has been evolved b y Mr. B. L. Hamilton, waterworks department field engineer, and has been put into operation on the waitakare pipeline job where it crosses under the Point Chevalier Road at the junction with Great North Road. By its utilisation no timbering is required for a tunnel, which can stand unsupported for a few hours. Above: The concrete arch being wheeled on its bottle-jack truck at the ground level. Below: Being hoisted into position in the tunnel. (Sec letterpress.)
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Bibliographic details
Manawatu Standard, Volume LVI, Issue 168, 17 June 1936, Page 7
Word Count
88ENGINEER'S INVENTION.—A new method of tunnelling has been evolved by Mr. B. L. Hamilton, waterworks department field engineer, and has been put into operation on the waitakare pipeline job where it crosses under the Point Chevalier Road at the junction with Great North Road. By its utilisation no timbering is required for a tunnel, which can stand unsupported for a few hours. Above: The concrete arch being wheeled on its bottle-jack truck at the ground level. Below: Being hoisted into position in the tunnel. (Sec letterpress.) Manawatu Standard, Volume LVI, Issue 168, 17 June 1936, Page 7
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