Two persons of The China-aided York Valley Bridge in Dominica reconnaissance group arrived in Dominica at 22:00 on September 1, and quickly carried out the mission after arriving site. The group reported the situation to commercial office of the Chinese Embassy in Dominica and made a brief description of this survey on meeting with Dominica engineering technical director on September 2. On September 3, the group went to check the rig, carried out the reconnaissance on site and solved the problems of renting forklifts, cranes and reconnaissance vehicles with Agricultural Ministy. They communicated with technical director of Engineering Ministy for problems of multi-corporation in the morning and made dig crew and hired drillers and Security Company in the afternoon on September 4. On September 5, the group formally began the reconnaissance on site.