Communication networks in the mining industry is a critical link between underground operations and surface staff. Mining processes are constantly changing and becoming more advanced, the demand for a network increases with the ever present risks in mining being rock falls, temperature extremes, confined spaces, high voltage and explosive gases being a few of the hazards in an underground network. First developed in the 1970’s fibre optic systems have revolutionised communications in the mining industry, creating an easy deployable and maintainable data system.