Blasts are controlled to avoid excessive vibration and since most blast holes contain water, an emulsion is used. The haul truck pauses under the scintilometer heads on the discriminator which measure the gamma radiation from each load. The read-out together with production requirements determine the destination of the load whether it be to the crusher, stockpiles or to the waste rock dump. 3 O 8 a year, requiring the processing of about one million tonnes of ore per year. Each operating area contains a control room from which an operator can remotely start and stop all equipment in that area, determine the status of equipment and control all key process variables.
All control systems are micro-processor based.
Generally, each area is controlled by one person who is responsible for all aspects of operation. Acid Plant Sulfuric acid needed for the leaching process in the ore treatment plant is manufactured on site from elemental sulfur. The plant is capable of producing about 250 tonnes of acid each day. Plant design and operation uses the latest technology to ensure that sulfur dioxide emissions are minimised. The Ranger power plant supplies power to the mine and township of Jabiru.