43-101 2009 Technical Report On The San Antonio Project, Baja ...

PEDIMENT GOLD CORP.14. Sample Preparation, Analyses and SecurityThompson and Laudrum (2008) described Pediment’s sample preparation, analyses andsecurity for the San Antonio project up to December 31 st , 2007. All methods remained thesame as described in that study and are reproduced below:14.1. Reverse Circulation SamplesAll logging of samples is made in-site by qualified Geologists at the same time that thesamples are being collected by the local (San Antonio) trained drill helpers. All samplesare taken by Pitalla staff in a pickup truck at the end of the shift to the central loggingfacility at San Antonio (about 10 minutes drive) where they are stored under lock and keyin a gated and fenced compound (finca) with security guards watching the premises 24hours per day. The core shack and yard in San Antonio village is rented from the family ofone of the staff who acts as a daytime security guard. The samples are packaged in ricesacks and trucked to the city of La Paz by bonded carrier and then by truck ferry (8 hours)to the Mexican mainland in Sinaloa State. The truck then proceeds to Hermosillo, Sonora(8 hours) and to the ALS Chemex preparation facility. Once prepared, the pulps areforwarded by ALS to the ALS Chemex labs in North Vancouver, Canada where Au contentis measured by fire assay with Atomic Absorption finish as well as by aqua regia digestionand ICP analysis to quantify trace elements. When needed, over- range Au analysis (>10ppm) is made by fire assay and Gravimetric finish.14.2. Rig DuplicatesIn addition, every 30 samples, a rig duplicate sample is obtained from the vertical discharge(50%), then is split and stored as individual samples in the warehouse; the other 50% is split asnormal in two 25% samples, which are packed in individual pre-numbered bags to be sent tothe lab as duplicate samples.14.3. Drill Core samplesAll sampling is carried out at 1.52 m (5 feet) intervals. Core barrels are 10 feet long. In a fewareas of poor recovery, samples are combined into lengths greater than 1.52 m. The 1.52 msample intervals are not tied to lithology, alteration or structure. Most of the sulphide core isfairly hard and competent and a diamond saw is used to cut the core in half (lengthwise). Faultzones (clay gouge) and other alteration, or small rubble zones are split with a spoon. Oxidecore is normally solid clay and is cut in half (lengthwise) using a butcher knife; solid lumps aresplit with the hammer splitter. Care is taken to keep the saws as clean as possible. One half ofthe core is put into individual sample bags while the other remaining half is retained in thecore boxes and stored on site in San Antonio. The plasticized cardboard core boxes, standardin Mexico, can store four runs of 1.52 m. Core is washed initially to remove drilling fluids, andthen logged and photographed and recovery noted by measuring the net amount receivedbetween drillers wooden markers, which are marked in feet and meters.