Silver Spruce contracts MPX Geophysics for Mag/Radiometrics/VLF Airborne Survey on Melchett Lake VMS Project, Ontario - Seite 2

MPX Geophysical Survey

The airborne survey will comprise a 927 line-km along N-S flight lines with 100 metre nominal line spacing, and 91 line-km of E-W oriented tie lines with 1,000 metre nominal line spacing (Figure 2). The Property grid will cover a total area of approximately 18 km E-W along the general strike of the VMS mineralization and 5km N-S with three 1 km steps to encompass the claim location. The Piper Aztek aircraft will fly daily from Thunder Bay 310 km SW of the Property.

Foto: Accesswire

Figure 2. Melchett Lake Claims showing location of MPX Geophysics airborne survey (UTM WGS 84) using 100m N-S flight lines and 1000m E-W tie lines. Base map - World Imagery.

The survey will collect magnetic, radiometric and VLF EM data supported by leading-edge positioning and processing equipment, both in the aircraft cabin and on the ground with the GEM Systems GSM-19 Base Station Magnetometer and a field data processing workstation.

The aircraft airspeed will be approximately 130-150 knots. Optimum terrain clearances for the aircraft and instrumentation (magnetometer, spectrometer, VLF) during normal survey flying are 70 metres. Vertical position along flight lines will be established using a pressure altimeter, a radar altimeter and GPS height. Final horizontal survey positions will be computed from differentially corrected GPS to a precision of ± 1m.

The attitude and motion of the aircraft in flight, with respect to the Earth's magnetic field vector, will be monitored/recorded by a three-component fluxgate magnetometer (Billingsley TFM 100G2 Triaxial Fluxgate Magnetometer), which is very sensitive to attitude changes.

The magnetic sensors utilized for the survey are Geometrics 822A or Scintrex CS3 high resolution cesium split-beam total-field magnetometer which will be installed in a tail stinger. Magnetic compensation of the acquired "raw" magnetometer data will be collected in real-time using the RMS Instruments DAARC500/ARC510 Data Acquisition and Aeromagnetic Real-Time Compensator ("RMS"), together with comprehensive and flexible data acquisition and recording. The RMS offers the ultimate in aeromagnetic compensation.

Radiation Solutions RS-500 multi-channel gamma-ray spectrometer with 33.6 liters "downward looking" NaI sensor, and 8.4 litres "upward looking" NaI sensor will be installed on the aircraft for the survey. The RS-500 supersedes all other airborne systems given its advanced DSP / FPGA technologies. The RS-500 is a fully integrated system that includes an individual Advanced Digital Spectrometer (ADS) for each crystal within the detector box.