Issue link: http://resourceworld.uberflip.com/i/990287
J U N E / J U L Y 2 0 1 8 www.resourceworld.com 51 EXPLORATION & MINING GEAR GeoVision Cameras Allegheny Instruments offers a variety of GeoVision TM cameras for use in boreholes. According to Allegheny Instruments, their GeoVISION Nano camera is the smallest diameter production borehole video inspection camera made today. The Nano camera is a mere 3/4 inch (2 cm) in diameter and is designed for use in boreholes as small as one inch (2.5 cm) in diameter and at depths up to 2,000 feet (600 metres). The Nano camera has standard NTSC resolution with an aspect ratio of 4:3. Illumination is provided by six high intensity white LEDs. The Nano camera is rated for use up to 1,000 psi and can be used with Light-Duty, Heavy-Duty and Deluxe winches. The Nano camera can also be used with the Nano Rotating Mirror to allow a side scan of the bore wall. The Nano Rotating Mirror can be set to rotate continuously or to rotate approximately 20°, pause for a few seconds and then continue rotating. The pause in rotation allows maximum resolution for recording the video image. Stargate II Drill Target Modeling System Resource companies use a variety of survey methods to identify anomalies on their exploration properties. Conventional airborne surveys such as EM, VTEM and other types often identify several anomalies on a mineral property, providing the exploration company with huge volumes of data, but little guidance on where to begin to drill, which according to Earth Science Services Corp. (ESSCO), "can lead to poor exploration outcomes." Earth Science Services' proprietary Stargate II 'Drill Target Modeling System' solves this problem by providing their clients with an initial "priority" target anomaly which can be tested with a single drill hole. "If the predicted mineralization is encountered, then follow-up drilling can be performed, and the definition of a new mineral resource can begin". The company's performance guarantee underscores their confidence in the system. Earth Science Services claims the Stargate II system acquires data from much greater depths than other geophysical methods thanks to their "Crystal Harmonics" based eddy current detection/discernment platform, an exclusive airborne survey receiver technology enhancement which makes possible regional scale 'ultra-deep' (+2500m) structural modeling. By pairing this with their proprietary algorithms and software, Earth Science Services is able to provide superior target discernment capability. According to Earth Science Services, the current practice of using high drill count 'anomaly elimination drilling ', is an ineffective and expensive approach to testing a prospective area, whereas "the Stargate II system offers a much more cost-effective solution. Since the economic downturn a few years ago, exploration dollars are increasingly scarce, and Earth Science Services states that "this new exploration tool is a logical method of supplementing a company's current exploration program." Allegheny Instruments' GeoVISION Nano camera. Photo courtesy of Allegheny Instruments Inc.