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historicalmarkerproject/markers/HM14MF_the-great-zig-zag_Clarence-New-South-Wales.html
A railway zig zag is a series of reversing ramps used to avoid very steep grades. John Whitton, Engineer in Chief NSW Government Railways 1856-90, chose this as the economical method for the descent from Clarence to Lithgow. Built during 1866-69 b…
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