TeachMeFinance.com - explain Core (impervious core or impervious zone)
Core (impervious core or impervious zone) The term 'Core (impervious core or impervious zone)' as it applies to the area of reclamation can be defined as ' A zone of low permeability material in an embankment dam. Sometimes referred to as 'central core,' 'inclined core,' 'puddle clay core,' and 'rolled clay core.' A cylindrical piece of an underground formation cut and raised by a rotary drill with a hollow bit. '.
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