The Yabby System developed for UIS drilling observes and records gas and water rates during drilling. This information is blended with coal strength spatial maps and drilling process data to characterise in-situ gas content and formation permeability. Real-time and post-analysis derived drainage rates are made available and provide a more complete knowledge of in-situ conditions regarding outburst mitigation and compliance forecasting. The system can be applied to any drilling program to provide accurate geological data that will assist longwall mine planning years in advance of the current face. The Yabby System utilises a unique signal extraction approach to give you the answers you need.