Mumbai, Sept. 30 -- Industrial activity, as measured by the Index of Industrial Production (IIP), remained robust in August, rising 4% year-on-year, just below July's revised 4.3%, according to data released by the National Statistics Office (NSO) on Monday. All three broad components of the index posted growth in August. Mining, which has a weightage of 14.4% in the IIP, grew at 6% after contracting for every month between April and July. Manufacturing, the largest component with a 77.6% weight, posted a growth of 3.8% and electricity, which has a weight of 8%, rose 4.1%. While the electricity sub sector growth was largely the same as 3.7% seen in July, manufacturing's slowdown over July's 6% growth seems to be a result of an adverse base ...