Britain\'s top share index fell on Tuesday, Reuters reported. The market was led lower by sectors most sensitive to optimism over the economy. Miners fell 1.5 percent, with Antofagasta down 2.7 percent after first-half profit dropped by nearly a third. Miners accounted for four of the top five fallers, and are down 15.1 percent so far this year, suffering from weaker commodity prices. The FTSE 100 was down 0.2 percent or 13.40 points at 6,478.70 at 0727 GMT, having added 1.4 percent in two days at the end of last week.