(SeeNews) - Aug 18, 2011 - Brazilian federal oil and gas giant Petrobras (SAO:PETR3; NYSE:PBR) and sugar and ethanol maker Sao Martinho (SAO:SMTO3) announced investments of BRL 520.7 million (USD 324.6m/EUR 226.2m) in the Boa Vista ethanol plant, to boost the sugar cane crushing capacity of the unit to up to 8 million tonnes as of crop year 2014/2015.