Lege Dembi is in the Adola gold belt 300 km southeast of the capital.
The balance of 693.3 kg worth $20 million was produced by artisanal miners, the bank said.
Midroc Gold Mine, which is owned by Saudi Arabian financier Sheik Mohammed Hussein Al Amoudi, paid $175 million in 1998 to win an international bid to run the mine for 20 years.
Midroc holds rights to produce gold in an area of 85 square km as part of a plan to boost
Officials say
It issued a mining proclamation and regulations that gave foreign investors incentives such as duty free imports of equipment and repatriation of profits in 1993.
Since then 12 foreign companies have signed agreements to explore for gold, base metals, gemstones and petroleum across the country, the ministry said. (Reporting by Tsegaye Tadesse; editing by Anthony Barker).
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