Martha Mine

Waihi prospered with the mine, by 1908 being the fastest-growing town in the Auckland Province, three times the size of Hamilton.

Exploration and prospecting work identified ore that could be profitably exploited through a lower cost "open pit" or open-cast approach.

[4] In March 2018 OceanaGold announced "Project Martha", part of which was to re-instate the pit haul road to allow mining to restart.

[6] The horizontal Cornish pump was used up to 1913 to raise water from a depth of around 400 metres (1,300 ft) via the adjacent No 5 shaft at a rate of over 400,000 litres per hour.

The operation to move the Cornish Pumphouse to a site 300 metres (980 ft) away was started in 2006 with the installation of internal steel bracing and the building of a relocation causeway.

[8] Later in the year, the building, weighing 1,840 tonnes, was moved over the course of three months along teflon-coated concrete beams to its present location, which is easily accessible via a footpath from Seddon Street.

These mines, (Favona, Trio and Correnso) run under much of the town of Waihi[10] - and produce approximately 100,000 ounces of gold each year.

In 2001, subsidence in the area caused a collapse of a house, and the operating company agreed to pay compensation to about 130 households for various negative effects due to noise, blast vibrations and dust.