Little literature deals with the measurement or mapping of tacit knowledge. Our approach makes use of expert vs. novice comparisons as a means of interpreting the likelihood of an individual possessing such knowledge. The incorporation of formal concept analysis provides an alternative visualisation of questionnaire responses. Social network analysis maps the flows or likely non-flows between individuals within the IS domain. Such an approach allows us to visualise the potential for tacit knowledge bottlenecking. Initial results seem to indicate that certain personnel, who may not necessarily be senior may be tacit knowledge receptors, whilst other employees may actually be inhibiting tacit knowledge flows within the workplace.