Quality Control Checklist for Longhole Drilling

This quality control checklist supports underground mining teams performing longhole drilling. It guides crews to review previously drilled holes and ring lines, confirm hole alignment, diameter, and length, and check distance from reference lines and adjacent holes. It covers dip and dump angles, BT or NBT designation, breakthrough checks, plugging of bad holes, water or slip conditions, and proper casing and hole plugs for downholes. Current drill setup checks include laser against ring marks, dip, dump, and offsets. General requirements span housekeeping and required signage. Additional controls include B.A.S.S tool results, collar checks, conformance to layout with correct hanging wall and footwall spacing, identification of redrills or easers, plugging original NFG holes, tagging fanbacks, proper wedging, capping, and casing cutbacks on backholes. Cablebolt drilling steps verify all holes and cables installed, cable lengths, grout tube preparation, plating or tensioning if required, water to cement ratio, set time, cleanup, and signoff by planner and shifter.