Plant for conducting operations in relation to a hole

A plant for assessing a hole, such as a blast hole, to forecast the grade/concentration of ore around the blast hole, the plant comprising:

• an arm assembly for supporting a tool, the tool being adapted to be lowered into the hole;
• a primary alignment means for positioning the arm assembly relative to the hole;
• a secondary alignment means for positioning the tool with respect to a hole, the secondary alignment means ensures the tool is aligned with the hole;
• whereupon alignment with the hole the arm assembly lowers the tool into the hole.

A method of collecting data from an array of holes wherein the data is representative of the geological composition of the hole, the method may comprise:

• executing a first operational sequence wherein a plant is positioned relative to the hole and placed into a ready position for receiving a tool which is adapted to collect the data;
• executing a second operation sequence wherein the plant is placed into a ready position for collecting the data;
• executing a third operation sequence wherein the plant collects the data associated with the hole;
• and
• executing a fourth operation sequence wherein the plant is placed into a mobile condition and moved to an adjacent hole.