After the contractor is selected, a number of activities must be completed before installation work can begin at the project site. Various bonds, licences and insurances must be secured. A detailed programme for the construction activities must be prepared. The cost estimate must be converted to a project budget and the system for tracking actual project costs must be established. The worksite must be organised, with provisions for temporary buildings and services, access and delivery, storage areas and site security. The process of obtaining materials and equipment to be incorporated into the project must be initiated and arrangements for labour, the other essential resource, must be organised. With the completion of this phase, it is finally time to begin the actual field construction.