Malaysia's appointed independent panel investigating the environmental impact of the Australian rare earths plant in the country has completed its work and is set to issue its findings by end of the month.

International Trade and Industry Minister Datuk Seri Mustapa Mohamed said the panel appointed by the International Atomic Energy Agency (IAEA) would submit its report to the Malaysian government by 30 June.

"This completes one phase of a decision-making process that has important implications to the Government and the nation. Public safety will not be compromised by the Government," he said in an issued press statement.

The rare earths facility being investigated by the commissioned IAEA team is proposed by Australian miner Lynas and will be built in eastern Malaysia.

Project documents showed that the completion of the rare earths facility in Gebeng, Kuantan can possibly match the capacity churned by China plants. Rare earths are a key element in technologically advanced gadgets especially Apple Inc.'s products like the iPad and iPhones.

The proposed rare earths plants were met with opposition by various environment groups because of health and safety concerns that prompted local authorities to seek an independent study.

Meantime, Lynas assured that the plant will have state-of-the art contamination controls.

He reiterated that the study done by the IAEA team will be factual and reinforces the government's decision would not be merely based on "emotional or political considerations."

"I think investors will welcome the fact that the Government makes its decisions based on facts and reasons, and does not act arbitrarily," Mr Mustapa said.