After that, before the fall of the regime New Order, Sumarlin entrusted to lead the state institutions, as Chairman of the Supreme Audit Agency (CPC).
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Little man and always provide a soothing smile, and dedication has played a central role during the reign of New Order (Orba), particularly in the economic field.
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When it is, in the beginning of 1969 or the beginning of the New Order resurrection, Sumarlin as the Deputy Fiscal and Monetary Bappenas asked to accompany the Chairman of Bappenas Widjojo Nitisastro attend Cabinet meetings Economics Limited, at the National Palace.
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Positions held include, among others, Chairman of CPC, Minister of Finance, Chairman of the Bappenas and Menag PAN.
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On the sidelines of that period he was appointed interim Minister of Finance and Minister of Education & Culture ad interim, replacing Prof. Dr. Nugroho Notosusanto who died in 1985.