The $6 million Yinumarra (Umbakumba) Health Centre was completed in 2017 and is the largest project GCC has undertaken. A small team of Indigenous workers were employed during its construction. This project was funded by the Regional Partnership Agreement between Groote Eylandt and Bickerton Island Enterprises, Australian Government and Northern Territory Government. Parent company GEBIE contributed $3 million to this project. The Centre was opened by opened by Ms Selena Uibo MLA, Member for Arnhem & Mr Alfred Mamarika, Chairman, GEBIE Aboriginal Corporation on Thursday, 14th September 2017.