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A Thai worker spreads pig manure in a cistern to produce bio-gas at Weerachai farm in Ratchaburi Province, 100km west of Bangkok, yesterday. The farm uses pig manure as a bio-gas for the production of electricity. The Thai government is hosting a conference on biofuels with more than 400 participants from Asia, South America and Europe. The government has been promoting ethanol, a home-grown biofuel and bio-gas to lower oil imports.Aug 31, 2004


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