Medellin-based multinational cement, electric power and airport/highways concessionaire Grupo Argos announced August 12 that its second quarter (2Q) consolidated net income soared 534% year-on-year, to COP$392 billion (US$102 million). Revenues rose 20% year-on-year, to COP$4 trillion (US$1.04 billion), while earnings before interest, taxes, depreciation and amortization