The world’s top copper producer reported that production of the metal fell 6.7% in November from the same month a year earlier to 504,366 tonnes. Government statistics agency INE noted the fall in mining activity was in part due to an unfavorable basis of comparison, a reflection of strong production the previous November. Chile’s Codelco, the world’s top copper miner, and BHP, which owns the sprawling Escondida copper mine, both reported increases in output in October despite riots that threw much of the country into chaos. November production figures for the mines are expected in early January. But Chile’s Antofagasta, another of the world´s top copper miners, warned in November of larger than anticipated impacts on output from the Chile protests. Chilean manufacturing production in November surprised analysts, jumping 3.2 percent compared with the same month the previous year, according to government data, bucking predictions of a sharper drop in output.