<p><p><strong>Reference(s):</strong></p><p><em>Holmquist et al. (2003)</em></p><p><strong>Method Summary</strong></p><p>Coring is done in mitigated areas to confirm the presence of grout. When coring is conducted, holes are rotary drilled to a point above the projected mine interval then cored through the grouted interval. Core samples retrieved are boxed and kept as visual documentation of the effectiveness of the mitigation</p><p><strong>Accuracy and Precision</strong></p><p>Allows for visual inspection of grout penetration.</p><p><strong>Adequacy of Coverage</strong></p><p>A single Coring can only measure adequacy of grout penetration at one point therefore numerous Corings could possibly be needed for a single project. No Bulk Infill Grouting references provide guidance on how many Corings should be performed at a given project.</p><p><strong>Implementation Requirements</strong></p><p>Some experience and special equipment is necessary</p><p><strong>General Comments</strong></p><p>Coring is used to verify the adequacy of grout penetration within subsurface voids.</p></p>