the bbc has spoken to david bojo leju, formerly a senior engineer for gpoc, an oil consortium in unityate. i got a job with the greater pioneer operating company, gpoc, as construction supervisor, in the five fields of unity state. nothing can go without us knowing in the oil field. gpoc runs the unity state oilfield. it's a joint venture between malaysian, indian and chinese oil companies, with south sudan's government owning 5%. david alleges that gpoc mismanaged its facilities, polluting the environment. he shared videos he recorded when he worked there. i was employed into an environment where there is an existing pollution. i had witnessed wells spilling out. oil spill is a recurring situation. wait, wait, wait. stop _ he says gpoc�*s infrastructure is old and unsafe. oil spills from the wells itself, wellheads. oil spills from wells connecting other — pipes connecting other wells. oil spills from the main export pipeline that had happened in a big quantity in 2019 and 2020. david left gpoc in 2020 after eight years. he says the pollution he saw was never cleared up and is more da