Xon only last year. Both men worked in the Centre for over 30 years. Aside from workers and their families, no one lives on the island. However there is a guest house for occasional visitors. There is a central food preparation building, a moorage for the Centre's motorised launch as well as small fishing boats used by staff.
Animal cages are simple roofed cage blocks, each typically containing five contiguous cages.
Styles vary little from the earliest design through the most recent, built in late 1992. Each cage is square, with a simple swinging door and a wall of bars in front, and frequently another door in the back. Although they have had little contact with foreign primatologists, these technicians have developed among themselves a body of practical expertise in primate handling. They had to develop their skills by trial and error, which was at the cost of the animals. When the Centre was first opened, they tried keeping animals permanently in cages, thinking that this was the best way to manage them.