Weavers Opencast Coal Mine, Coal Corporation of NZ, Huntly, North Island
July 31, 1993
This $40M contract for Coal Corporation of NZ, completed in 1993, required 11.0Mbcm of overburden stripped over a 3 1/2 year period.
The contract also included the construction of a 60m engineered earth dam to retain unconsolidated saturated clay and sand overburden.
A fleet of 3 x 150 tonne capacity rigid dump trucks and a 350 tonne face shovel were imported specifically for this contract.
Overburden stripping included difficult moisture sensitive materials (quaternary clays & Waikato coal measures / fire clay) and underground workings.
Weavers Mine was located adjacent to three housing subdivisions and required water discharge into a nearby lake. Consequently environmental standards were high ensuring minimal impact on the lake and local residents.