02122cka a2200337 a 4500001000800000005001700008008004100025040001800066042000900084043001200093245016500105260001000270300004300280500003300323500012600356500010800482500003500590520034500625530010600970540003801076541003701114610005601151650010401207650006001311650006901371651004301440710001701483773013501500830010401635856004501739467313620091106115333.0090821s1962 xx nnn inzxx  aANLbengdANL aanuc au-at-ne00aSliding floor and jumbo mobile drilling platform in Snowy-Geehi Tunnel as seen from tunnel face, New South Wales, August 1962h[picture] /cThiess Bros Pty Ltd. c1962. a1 photograph :bb&w ;c26.6 x 21.6 cm. aTitle based on inscriptions. aInscriptions: "Sliding floor and jumbo in Snowy-Geehi Tunnel as seen from tunnel face, August 1962"--Printed below image. aIn: Work carried out on Snowy Mountains project by Thiess Bros Pty Ltd from June 1961, New South Wales. aCondition: Silvering, buckled. a"Designed by American engineer Don Jacobs, the sliding tunnel floor shown in photograph was one of Thiess' key innovations and enabled the excavation of the Snowy-Geehi tunnel to proceed at record speed. Thiess broke the world record for hard rock tunnelling, excavating 165 metres in six days"--Information from acquisitions documentation. aAlso available in an electronic version via the Internet at: http://nla.gov.au/nla.pic-vn4667159-s153 aCopyright restrictions may apply. aDonated by Thiess Pty Ltd, 2009.20aSnowy Mountains Hydro-Electric SchemevPhotographs. 0aHydroelectric power plantszNew South WaleszSnowy MountainsxDesign and constructionvPhotographs. 0aTunnelszNew South WaleszSnowy MountainsvPhotographs. 0aBoring machineryzNew South WaleszSnowy MountainsvPhotographs. 0aSnowy Mountains (N.S.W.)vPhotographs.2 aThiess Bros.08iIn collection:tWork carried out on Snowy Mountains project by Thiess Bros Pty Ltd from June 1961, New South Walesw(AuCNL)4667159 0aWork carried out on Snowy Mountains project by Thiess Bros Pty Ltd from June 1961, New South Wales.41uhttp://nla.gov.au/nla.pic-vn4667159-s153