Improve blast fragmentation with independent studies showing up to 27% reduction in average rock size.  Greater tonnage through crusher proven by 12 month study in gold fields of West Africa.  Control of fly rock.  Possible to use granular drill cuttings as stemming.  Quarries can reduce stemming heights for better cap rock breakage. Studies being completed showing pattern spread possible, saving on drilling costs.   The Varistem is the lowest cost means of improving quarry output.   Contact MOCAP Inc. for further details.  http://www.varistem.com/