43-101 2007 Technical Report On The San Antonio Project, Baja ...
43-101 2007 Technical Report On The San Antonio Project, Baja ...
43-101 2007 Technical Report On The San Antonio Project, Baja ...
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Derry, Michener, Booth & Wahl Consultants Ltd. Page 38<strong>The</strong> Pitalla personnel who do the cutting are local laborers with varying degrees of technicalskills (non-geological), but were trained on site. Assay samples are bagged, tagged and zip-tiedin secure bags and then transported to La Paz and to Hermosillo as described above.13.4 Exploration Rock SamplesRock and trench samples were collected by qualified Mexican geologists/prospectors with data,including UTM coordinates, lithology and mineralization recorded in field books. Grab, andrepresentative chip samples, are placed in standard plastic rock sample bags, tagged and thelocations recorded in a master database. <strong>The</strong> plastic bags are sealed using plastic pull ties. Allsamples are taken to the central logging facility at <strong>San</strong> <strong>Antonio</strong>. Sample shipment and treatmentis as described in 13.1.13.5 ALS Chemex ProtocolALS Chemex laboratories in North America are registered to ISO 9001: 2000 for the provisionof assay and geochemical analytical services by QMI Quality Registrars.In addition Chemex’s North Vancouver laboratory has received ISO 17205 accreditation fromthe Standards Council of Canada under CAN-P-1579 “Guidelines for Accreditation of MineralsTesting Laboratories”. (Reference www.alsglobal.com)Quality Assurance: Standard specifications for sample preparation are as follows:• Crushing: >70% of crushed sample passes through a 2 mm screen• Ringing: >85% of the ring pulverized sample passes through a 75 micron screen (Tyler200 mesh)• Samples received as pulps: >80% of the sample passes through a 75 micron screen13.6 ConclusionsIn the opinion of DMBW the sample preparation, security practices and analytical proceduresemployed by Pitalla, with exception of the lack of check assays, meet industry norms.