The traditional method of knowledge acquisition when constructing a knowledge-based (expert) system is to depend primarily upon a single source, usually an expert in the domain under consideration. This approach has several advantages: no need to resolve conflicts -- factual or personal -- among several experts; easier communication; a more consistent approach to solving the problems dealt with, etc. However, certain domains require the use of more than one expert to gather sufficient knowledge to construct a meaningful system. We report on one such domain and on the techniques used for knowledge acquisition from multiple experts.