Reports      Value of Bolivian mineral exports, including zinc, copper, gold, sags 10% to $1.2 bil Jan-Aug Lima (Platts)–6 Oct 2015 408 am EDT/808 GMT Bolivia’s minerals exports dropped 10.4% to $1.2 billion in January-August from a year earlier due to declining metals prices and a month-long protest in the mining region of Potosi,…