RAGS and barrels are important items for Adji Koesoemo, 43. He uses the old rags to separate water from plankton. A barrel is used to breed the microorganisms which live in the sea. These two items help Adji produce fuel from plankton. Adji, a dropout from the philosophy department of Gadjah Mada University, produces fuel from plankton on a small scale at his home in Griya Mahkota Nogotirto, Gamping, Sleman, Yogyakarta.

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