Motherlode Drill Hole DDH009
Quality Assurance and Quality Control
All technical information for Rugby’s Motherlode project is obtained and reported under formal quality assurance and quality control (“QA/QC”) procedures and guidelines. Rugby’s procedures are designed to meet or exceed C.I.M. “Best Practices Guidelines” and National Instrument 43-101 standards of disclosure. QA/QC protocols for drill core sampling and assaying include the insertion and monitoring of appropriate reference materials (certified standards, blanks, duplicates and checks) to validate the accuracy and precision of the assay results.
All drilling samples were collected with a diamond core drilling rig using approximately one to three metre sample intervals following industry standard practice. Intertek Mineral Services (NATA ISO/IEC 17025 accredited) prepared the samples at Intertek’s sample preparation facility in Surigao, Philippines and then samples assayed at Intertek’s laboratory in Manila, Philippines. All samples were assayed for Au using fire assay (50g) with an AAS finish and multi element analysis using trace level ICP. Samples >1% Cu were re-assayed using an ore grade 4 acid digest with AAS finish.
*This historical estimate is presented is for reference purposes only. A majority of the records on actual ore produced at Motherlode were destroyed during WW2 and later by fires. However, management has examined physical evidence at the site and existing geological data to confirm that the estimation is suitable for presentation purposes.