Doug Hood Mining

Taharoa Ironsand, King Country, North Island

December 31, 2000

Dredge support mining and relocation haulroad for BHP New Zealand Steel Mining at Taharoa

The initial contract beginning in early 1999 required DHML to excavate and cart a minimum of 25,000m3 of sand per week to either the mine face or the dredge path ahead of the mine face.

Also required were removal of vegetation and clay to dump, and maintenance of haul roads.

The majority of the work was carried out utilising a Cat 375 excavator and a fleet of D400D articulating dump trucks.

With an increase in production the fleet was upsized to an EX1100 excavator and 4 x 773B rigid dump trucks.

Support plant included D8K dozer, Cat 330 excavator and 14G grader.

In 2000 DHML constructed a 1km long x 20m carriageway transporter haulage route and 20m x 10m dry dock for BHP and Tranzcarr Heavy Haulage Ltd as part of the 2km relocation across site of the concentrator barge (1000 tonne), surge bin (450 tonne) & dredge (250 tonne).

The final value of the work was $3.4M and total volume moved was 1.4M m3.

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2 responses to “Taharoa Ironsand, King Country, North Island”

  1. Ross Gray says:

    I worked on the first access road to the mine site over the sand hills, the dam across the stream, and the pond the dredge was assembled in as well as the pipe line building and towing out to sea, was with G A Renner of Tauranga back in about 1971. The place sure looks a lot different now days. Cheers Ross Gray.

  2. Roger Birt says:

    I was the first Maintenance Manager there 1974-76, under the Mine Manager, Albert Hedger. I constructed the airstrip which seems to have survived.
    I would be interested to know the logistics of moving the dredge to the position it is in now. Quite a distance from where it was initially.

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