The cost of drilling consumables is always a large component of any mine budget. It is important that this cost be carefully examined with a view to reducing the overall cost per inetre or at least minimising its escalation._x000D_
At Renison it is considered that the only way to ensure drilling costs do not rise unduly is through a total system of control from purchase to disposal._x000D_
In 1979 extension of an existing drill supply service contract was carefully examined and abandoned in favour of a hybrid system. This system is providing a great deal of control over the use of drilling consumables and has maintained a relatively constant cost per drilled metre over the last five years._x000D_
Current consignment stock contracts for drilling consumables are strictly specified by the Technical Services section of the Mine Department and consumables purchased under these contracts are distributed and refurbished/sharpened by a contractor._x000D_
The total result of this package is individual drilling items that achieve the best cost per metre and careful distribution and maintenance to ensure maximum life.