Abstract
Implementing an environmental scanning system has become a major issue for numerous industrial companies due to the ever increasing market instability. Its implementation raises a major difficulty linked to the management of the staffs interpersonal networks of relationships. These intelligence gathering networks are the major source of information for contracting firms in industries such as aerospace, construction, engineering... This paper explores the base elements of relationships and analyzes its extreme modes, utility and syntony so as to provide the basis for a research programme on the mobilization of interpersonal relationships with a view to increase the efficiency of environmental scanning systems.