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obviously worked well in controlling erosion. In fact, since the <br />pre-mining vegetation was mostly shrub cover and the post-mining <br />vegetation is mostly herbaceous cover, the operator strongly <br />believes that the erosional condition is better now than in the <br />pre-mining state. Very low sediment deliveries to all of the <br />ponds at the three locations show strong evidence for this <br />contention. Concerning any differences among the sites, <br />monitoring data is available from 1984 to 1993 which shows no <br />significant differences in sediment delivery to any of the <br />detention ponds at all three sites. This is also compatible with <br />the good vegetation cover and the lack of rills and gullies. <br />