Alison2 said:
"Between 1900 and 1925 I have 6 Families Emigrating to New Zealand to work in the Mines and 2 worked on the Rumeru Spiral Railway."

Just a minor question/possible correction Alison - do you mean the Raurimu Spiral, which is a section of the Main Trunk Railway between Auckland and Wellington? If that is the case, here are a few references for you:

http://www.nzetc.org/tm/scholarly/tei-Gov11_06Rail-t1-body-d12.html
http://www.nzhistory.net.nz/media/photo/raurimu-spiral
http://www.teara.govt.nz/en/engineering/2/3
http://en.wikipedia.org/wiki/Raurimu_Spiral

Apologies if I am attempting to instruct a grandmother in the art of sucking eggses!

John