Pico Envirotec Inc. P-THEM

16/05/2012

ABOUT PICO ENVIROTEC

Pico Envirotec Inc. (PEI) is a Canadian company, established in 1992. Since 1998 it has been engaged primarily in

manufacturing advanced instrumentation for use in airborne and ground geophysical surveys for mining, oil and gas and

environmental applications. PEI’s core expertise is the development and manufacture of instrumentation for remotely

measuring magnetic, electromagnetic, gravity and gamma-ray radiation data, using real-time data acquisition and precise

satellite (GPS) navigation and positioning. Because of PEI’s close co-operation with other geophysical companies, it provides

complete, integrated, turnkey airborne or ground geophysical systems for acquiring data for mining, oil and gas or

environmental applications. This is made possible by its development of "intelligent" instruments, using advanced state-of-the

-art technology, which facilitates easy and safe integration of just about any sensor or measuring device into a system. The

AGIS (Airborne Geophysical Information System for airborne geophysical exploration), IRIS (Integrated Radiation Information

System for environmental monitoring), P-THEM (Pico Envirotec Transient Helicopter EM System) and PeiCore (Ground Data

Acquisition based on mobile technologies) are PEI’s most successful systems based on this “intelligent” philosophy.

During the many years PEI has been in business, it has installed more than 100 airborne systems on a wide variety of aircraft

and helicopters, for clients that include mining companies, exploration services companies, and government agencies.

Airborne systems designed, built, integrated and installed by PEI are flying in many countries around the world, including

Canada, USA, UK, Austria, Australia, Brazil, China, Czech Republic, Egypt, Finland, France, Germany, India, Italy, Libya, Mexico,

Norway, Russia, Sweden, South Africa and other.

During the same time frame, PEI has also delivered many portable, mobile and base station systems based on advanced

mobile technologies. These systems included sensors for magnetic and/or magnetic gradient measurements and gamma-ray

spectrometry, equipped with GPS synchronization and compact data logger unit. The systems are widely used in geological

exploration, archaeology, environmental and radiation protection tasks around the world.

P-THEM test flight in Canada The Reid Mahaffy Test Site is located in the Abitibi Subprovince. The test site was created in 1999 by the Ontario Geological Survey, initially to enable various airborne geophysical systems to demonstrate their basic performance capabilities.

The area is underlain by Archean (~2.7 b.y.) mafic to intermediate metavolcanic rocks in the south, and felsic to intermediate metavolcanic rocks in the north, with roughly an east-west striking stratigraphy. The survey flights over the Reid

Mahaffy test site were performed in April 2010.

The altitude and direction tests were flown on three lines over the test survey area. The lengths of test lines were approximately 5.3 km with a line spacing of 200 m. All test lines were flown with the transmitter elevation 30 meters above the ground and a survey speed of approximately 55 knots.

On the CDI image, the conductive body under overburden can be seen

on the grid of the observation results at different decay time channels. One can see that early time windows represent overburden which correlates with the known thickness. The conductive body appears on later time channels and remains detectable in late channels

The electrical inversion of the results allows a structure of several vertical conductor slices, forming the con-ductive body, to be distinguished.

More detailed test flights data and information can be provided by request.

Reid-Mahaffy test site

Conductivity-depth image (CDI) over the Reid-Mahaffy test site

PICO ENVIROTEC INC

222 Snidercroft Road

Concord, ON

L4K 2K1, Canada

Phone: +1.905.760.9512

Fax: +1.905.760.9513

E-mail: pei@picoenvirotec.com

www.picoenvirotec.com

PP--THEMTHEM Pico Envirotec Time Domain Helicopter EM System

PPP---THEM is a versatile stateTHEM is a versatile stateTHEM is a versatile state---ofofof---thethethe---art timeart timeart time---domain domain domain

helicopterhelicopterhelicopter---borne electromagnetic system. It features a borne electromagnetic system. It features a borne electromagnetic system. It features a

powerful compact transmitter, three axis receiver, powerful compact transmitter, three axis receiver, powerful compact transmitter, three axis receiver,

digital data acquisition and system control. The easy digital data acquisition and system control. The easy digital data acquisition and system control. The easy

operation and high mobility system is well suited for operation and high mobility system is well suited for operation and high mobility system is well suited for

mineral and ground water explorations, nearmineral and ground water explorations, nearmineral and ground water explorations, near---surface surface surface

geological mapping, and environmental study. The geological mapping, and environmental study. The geological mapping, and environmental study. The

light Plight Plight P---THEM system can be towed by a midTHEM system can be towed by a midTHEM system can be towed by a mid---light light light

helicopter such as Bell 206 “Ranger”, MD 500, helicopter such as Bell 206 “Ranger”, MD 500, helicopter such as Bell 206 “Ranger”, MD 500,

AS350 or similar. The system can be easy operated AS350 or similar. The system can be easy operated AS350 or similar. The system can be easy operated

in rough terrain due to its compact size and low in rough terrain due to its compact size and low in rough terrain due to its compact size and low

weight.weight.weight.

The Pico Envirotec Time Domain EM system has The Pico Envirotec Time Domain EM system has The Pico Envirotec Time Domain EM system has

been designed and constructed using the latest been designed and constructed using the latest been designed and constructed using the latest

technologies and experience of specialists, who technologies and experience of specialists, who technologies and experience of specialists, who

have collaborated in the development. The have collaborated in the development. The have collaborated in the development. The

relatively powerful system, with a tight footrelatively powerful system, with a tight footrelatively powerful system, with a tight foot---print, print, print,

provides better spatial underground object provides better spatial underground object provides better spatial underground object

resolution. The full wavelength recorded data resolution. The full wavelength recorded data resolution. The full wavelength recorded data

allows the user to set the data extraction and allows the user to set the data extraction and allows the user to set the data extraction and

processing according to the particular geological processing according to the particular geological processing according to the particular geological

task.task.task.

Pico Envirotec Inc. P-THEM

The standard PThe standard PThe standard P---THEM system is comprised of an 8.6 meter diameter THEM system is comprised of an 8.6 meter diameter THEM system is comprised of an 8.6 meter diameter

nonagon transmitter loop assembly and a 3nonagon transmitter loop assembly and a 3nonagon transmitter loop assembly and a 3---axis receiver suspended axis receiver suspended axis receiver suspended

on the towon the towon the tow---rope, midway between the transmitter assembly and the rope, midway between the transmitter assembly and the rope, midway between the transmitter assembly and the

helicopter.helicopter.helicopter.

The PThe PThe P---THEM system, in its standard configuration, can work powerTHEM system, in its standard configuration, can work powerTHEM system, in its standard configuration, can work power---

independent from the helicopter power supply. A motor generator independent from the helicopter power supply. A motor generator independent from the helicopter power supply. A motor generator

is mounted on the transmitter assembly and balanced to deliver is mounted on the transmitter assembly and balanced to deliver is mounted on the transmitter assembly and balanced to deliver

stable power to the transmitter through the duration of each survey stable power to the transmitter through the duration of each survey stable power to the transmitter through the duration of each survey

mission. Optionally, power can be obtained from the aircraft, if the mission. Optionally, power can be obtained from the aircraft, if the mission. Optionally, power can be obtained from the aircraft, if the

helicopter has sufficient power reserves.helicopter has sufficient power reserves.helicopter has sufficient power reserves.

The PThe PThe P---THEM transmitter forms a half sign wave pulse of a quarter THEM transmitter forms a half sign wave pulse of a quarter THEM transmitter forms a half sign wave pulse of a quarter

duty cycle length (25% pulse length) with the peak magnetic moment duty cycle length (25% pulse length) with the peak magnetic moment duty cycle length (25% pulse length) with the peak magnetic moment

of 250 000 NIA. The system can support two base frequencies of 250 000 NIA. The system can support two base frequencies of 250 000 NIA. The system can support two base frequencies

depending on the survey requirements (mineral exploration, or depending on the survey requirements (mineral exploration, or depending on the survey requirements (mineral exploration, or

geological mapping in resistive area, etc) adapted to industrial geological mapping in resistive area, etc) adapted to industrial geological mapping in resistive area, etc) adapted to industrial

frequency in the survey area: 30Hz and 90Hz for 60Hz environment; frequency in the survey area: 30Hz and 90Hz for 60Hz environment; frequency in the survey area: 30Hz and 90Hz for 60Hz environment;

25Hz and 75Hz for 50Hz environment. The transmitter current is 25Hz and 75Hz for 50Hz environment. The transmitter current is 25Hz and 75Hz for 50Hz environment. The transmitter current is

recorded through the current monitor channel. recorded through the current monitor channel. recorded through the current monitor channel.

The three axis receiver, attached on the half distance between The three axis receiver, attached on the half distance between The three axis receiver, attached on the half distance between

the transmitter assembly and the helicopter, acquires the full the transmitter assembly and the helicopter, acquires the full the transmitter assembly and the helicopter, acquires the full

vector of the secondary field. Zvector of the secondary field. Zvector of the secondary field. Z---coil data can be used directly coil data can be used directly coil data can be used directly

from observations for an preliminary (fast) interpretation. from observations for an preliminary (fast) interpretation. from observations for an preliminary (fast) interpretation.

The data extraction software has builtThe data extraction software has builtThe data extraction software has built---in operation for the in operation for the in operation for the

acquired data recalculation to X and Z axes along the flight acquired data recalculation to X and Z axes along the flight acquired data recalculation to X and Z axes along the flight

direction. This compensates for mechanical vibrations of the direction. This compensates for mechanical vibrations of the direction. This compensates for mechanical vibrations of the

receiver during the flight. The time derivative magnetic field receiver during the flight. The time derivative magnetic field receiver during the flight. The time derivative magnetic field

(((dB/dtdB/dtdB/dt) or its recovered value () or its recovered value () or its recovered value (BBB) can be obtained from the ) can be obtained from the ) can be obtained from the

survey.survey.survey.

The data extraction, processing and interpretation can be The data extraction, processing and interpretation can be The data extraction, processing and interpretation can be

customized according to exploration tasks in a post mission customized according to exploration tasks in a post mission customized according to exploration tasks in a post mission

mode because of full wavelength data acquisition. Depending mode because of full wavelength data acquisition. Depending mode because of full wavelength data acquisition. Depending

on the survey goals, more attention can be paid to early or to on the survey goals, more attention can be paid to early or to on the survey goals, more attention can be paid to early or to

late windows (time channels). The user may also select wider or late windows (time channels). The user may also select wider or late windows (time channels). The user may also select wider or

narrower windows.narrower windows.narrower windows.

P-THEM schematics; Pulse and response shape

P-THEM System in Gatineau, QC, Canada Buckingham test flight (2009, QC, Canada)

P-THEM System in test flight, 2010

Pico Envirotec Inc. P-THEM

Dipole Moment: P-THEM - 250,000 NIA

Tx Waveform: Half Sine, vertical dipole

Pulse length: 25% - standard

Frequency: Standard: 25Hz/30Hz

Optional: 75Hz/90Hz

Receiver (Rx) : Multi-axes, X, Y, Z

ADC sampling rate: 90 kHz

Time channels (TC): Defined while extraction

TC positions: Programmable

TC width: Programmable

On-time channel: Can be defined while

extraction

Transmitter loop: 8.6 metres diameter

Surface area: 57 m2

System weight : 300 kg

Survey Speed: 50 – 60 knots (standard) (80 – 100 kph)

Tx Loop MTC : 30 meters

Rx MTC: 60 meters

Other equipment: Synchronized Magne-tometer; Gamma-Ray spectrometer

Helicopter MTC: 90-100 meters

Output data format: Binary, ASCII, Geosoft

MTC = Mean Terrain Clearance

P-THEM Specifications

Pico Envirotec has designed dedicated

data extracting and pre-processing

software. EMDataViewer allows

operators to perform express data

quality control, correction of data,

analyzation of data, external noise

filtering, windows extraction and basic

Software

operations in a visual and dialog mode.

The data can be corrected to pulse

amplitude variations, happening due to

altitude/temperature changes.

The extracted windowed data can be

exported into Geosoft or ASCII formats for

further processing and interpretation

using a wide range of software.

Data Extraction and pre-processing software

Data Acquisition software screenshot

Tau Map of the test survey in Aliston Area, ON, Canada, 2010

The Aliston area, located just north of Toronto, Canada is formed by quaternary sediments going to 300 meters depth and underlying Ordovician bedrock corps.

The test flight showed the response of the

P-THEM system to quaternary geology, surface salinity pollution and industrial constructions.

More detailed test flights information can be provided by request.