ZQ3-SPS-UTPADHazard Warning Transmitter for Miners

2011 Strata Proximity Systems, LLC 1769 Jeff Road Huntsville, AL 35806 1.800.691.6601 Strata Proximity Systems Underground PAD Users Manual v1.0 Confidentoial Patent #’s 7,420,471 5,939,986 and 6,810,353 Patent Pending Page 2 of 9 Strata Proximity Systems Underground PAD Users Manual v1.0 Confidential and Proprietary September 1, 2011 Table of Contents 1 Overview .............................................................................................................................3 1.1 Theory of Operation ......................................................................................................3 1.2 Frequency of Operation ................................................................................................4 1.3 Approvals ......................................................................................................................4 1.3.1 MSHA Approval ......................................................................................................4 1.3.2 Pennsylvania Approval ...........................................................................................4 1.3.3 West Virginia Approval...........................................................................................4 1.4 Label Information..........................................................................................................4 1.5 FCC Information ............................................................................................................6 2 Operation ............................................................................................................................6 2.1 Installation Information ................................................................................................6 2.1.1 Interoperability Warning ........................................................................................7 2.2 Charging ........................................................................................................................7 2.3 Alerts ............................................................................................................................7 2.4 Buttons .........................................................................................................................8 2.5 Maintenance .................................................................................................................9 3 Warranty .............................................................................................................................9 4 Revision History ...................................................................................................................9 4.1 Version 1.0 – September 1, 2011 ..................................................................................9 Confidentoial Patent #’s 7,420,471 5,939,986 and 6,810,353 Patent Pending Page 3 of 9 Strata Proximity Systems Underground PAD Users Manual v1.0 Confidential and Proprietary September 1, 2011 1 Overview The Underground PAD is a component of the HazardAvert™ Proximity Detection System from Strata Proximity Systems (SPS). HazardAvert™ provides warnings to individuals and machinery to alert them that an individual wearing the PAD has entered too close to an operating piece of equipment and is in a dangerous situation. HazardAvert™ also warns when vehicles or other machinery are getting close enough that the possibility of a collision exists. 1.1 Theory of Operation The Underground PAD is worn by an individual. The functions of the Underground PAD are:  To detect the presence of a 73 kHz electromagnetic field generated by vehicles or machinery equipped with the HazardAvert™ system and to determine if the field strength level detected indicates that the individual is in or is approaching a dangerous situation.  To provide an audible and visual indication to the wearer of the Underground PAD when they are approaching or are in a dangerous location as a result of the 73 kHz field strength level.  To transmit a 916.48 MHz RF signal to vehicles or machinery equipped with the HazardAvert™ system signaling that the individual is entering or has entered into a dangerous area relative to the vehicle or machinery. The Underground PAD has a 73 kHz receiver that is constantly on and monitoring the strength of fields emitted by vehicles and machinery equipped with the HazardAvert™ proximity and collision avoidance system. The Underground PAD monitors the strength of the 73 kHz fields in three axis and determines if the field strength has risen to a level that would indicate that the individual is approaching a “Warning Zone” or is in a “Danger Zone” due to being too close to the vehicle or machinery. If the Underground PAD determines that the individual is too close to the vehicle or machinery, it gives the individual both a visual and audible indication. At the same time, the PAD transmits a 916.48 MHz RF signal to inform the vehicle or machinery that the individual is approaching too close. If the Underground PAD determines that the field strength indicates that the individual is not in a Warning or Danger Zone area, it will transmit a data packet every ten (10) seconds via the 916.48 MHz with its status condition. The Underground Pad is comprised of four systems each on a separate printed circuit board. The PAD System Board contains three magnetic field pick-up coils each in a physically different axis placed 90 degrees from each other. These pick-up coils along with their fixed value capacitors and amplifiers form a 73 kHz receiver for reception of fields generated by vehicles or machinery equipped with the HazardAvert™ system. The System Board also has a PIC microcontroller which receives the inputs from three detectors which independantly detect the inputs from the three 73 kHz pick-up coils. The PIC through an internal algorithm, determines if the 73 kHz field is above a pre-programmed threshold. Confidentoial Patent #’s 7,420…

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Strata Proximity Systems LLC 1769 Jeff Road Huntsville, AL 35806 256-830-2008 Internal & External Photos for FCC Certification Underground PAD – Page 1 of 8 Model: HA-PAD-2100 FCC ID: ZQ3-SPS-UTPAD Underground PAD – External Photo Top Front View Strata Proximity Systems LLC 1769 Jeff Road Huntsville, AL 35806 256-830-2008 Internal & External Photos for FCC Certification Underground PAD – Page 2 of 8 Model: HA-PAD-2100 FCC ID: ZQ3-SPS-UTPAD Underground PAD – External Photo Rear View Strata Proximity Systems LLC 1769 Jeff Road Huntsville, AL 35806 256-830-2008 Internal & External Photos for FCC Certification Underground PAD – Page 3 of 8 Model: HA-PAD-2100 FCC ID: ZQ3-SPS-UTPAD Underground PAD – External Photo Right Side View Strata Proximity Systems LLC 1769 Jeff Road Huntsville, AL 35806 256-830-2008 Internal & External Photos for FCC Certification Underground PAD – Page 4 of 8 Model: HA-PAD-2100 FCC ID: ZQ3-SPS-UTPAD Underground PAD – External Photo Left Side View Strata Proximity Systems LLC 1769 Jeff Road Huntsville, AL 35806 256-830-2008 Internal & External Photos for FCC Certification Underground PAD – Page 5 of 8 Model: HA-PAD-2100 FCC ID: ZQ3-SPS-UTPAD Underground PAD – External Photo Bottom View

Strata Proximity Systems LLC 1769 Jeff Road Huntsville, AL 35806 256-830-2008 FCC Label: Strata Proximity Systems Model HA-PAD-2100 FCC ID: ZQ3-SPS-UTPAD This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Strata Proximity Systems LLC 1769 Jeff Road Huntsville, AL 35806 256-830-2008 FCC Label Location:

Strata Proximity Systems LLC 1769 Jeff Road Huntsville, AL 35806 256-830-2008 Internal & External Photos for FCC Certification Underground PAD – Page 6 of 8 Model: HA-PAD-2100 FCC ID: ZQ3-SPS-UTPAD Underground PAD – Internal Photo Main Printed Circuit Board Strata Proximity Systems LLC 1769 Jeff Road Huntsville, AL 35806 256-830-2008 Internal & External Photos for FCC Certification Underground PAD – Page 7 of 8 Model: HA-PAD-2100 FCC ID: ZQ3-SPS-UTPAD Underground PAD – Internal Photo RF Transmitter Printed Circuit Board Strata Proximity Systems LLC 1769 Jeff Road Huntsville, AL 35806 256-830-2008 Internal & External Photos for FCC Certification Underground PAD – Page 8 of 8 Model: HA-PAD-2100 FCC ID: ZQ3-SPS-UTPAD Underground PAD – Internal Photo Battery and Battery Interface Printed Circuit Board

Certificates and reports shall not be reproduced except in full, without the written permission of Washington Laboratories, Limited. FCC Certification Test Report FCCID: ZQ3-SPS-UTPAD STRATA PROXIMITY SYSTEMS UNDERGROUND HAZARDAVERT TRAMGUARD PAD M ODEL HA-PAD-2100 WLL REPORT# 12035-01 Rev 1 September 9, 2011 Re-issued October 3, 2011 Prepared for: Strata Proximity Systems 1769 Jeff Road Huntsville, AL 35806 Prepared By: Washington Laboratories, Ltd. Washington Laboratories, Ltd.Washington Laboratories, Ltd. Washington Laboratories, Ltd. 7560 Lindbergh Drive 7560 Lindbergh Drive7560 Lindbergh Drive 7560 Lindbergh Drive Gaithersburg, Maryland 20879 Gaithersburg, Maryland 20879Gaithersburg, Maryland 20879 Gaithersburg, Maryland 20879 Testing Certificate AT-1448 Strata Proximity Underground Hazardavert Tramguard PAD FCC Certification Test Report September, 2011 WLL Report #12035-01 Rev 2 - ii - © 2011 Washington Laboratories, Ltd. FCC Certification Test Report For the S TRATA PROXIMITY SYSTEMS UNDERGROUND HAZARDAVERT TRAMGUARD PAD MODEL HA-PAD-2100 FCCID: ZQ3-SPS-UTPAD WLL REPORT# 12035-01 Rev 2 September 9, 2011 Re-issued October 3, 2011 Prepared by: ___________________________ Steven Dovell Compliance Engineer Reviewed by: ____________________________ Steven D. Koster VP, EMC & Wireless Strata Proximity Underground Hazardavert Tramguard PAD FCC Certification Test Report September, 2011 WLL Report #12035-01 Rev 2 - iii - © 2011 Washington Laboratories, Ltd. Abstract This report has been prepared on behalf of Strata Proximity Systems to support the attached Application for Equipment Authorization. The test report and application are submitted for an Intentional Radiator under Part 15.249 (10/2009) of the FCC Rules. This Certification Test Report documents the test configuration and test results for a Strata Proximity Systems Underground HazardAvert Tramguard PAD. Testing was performed on an Open Area Test Site (OATS) of Washington Laboratories, Ltd, 7560 Lindbergh Drive, Gaithersburg, MD 20879. Site description and site attenuation data have been placed on file with the FCC's Sampling and Measurements Branch at the FCC laboratory in Columbia, MD. Washington Laboratories, Ltd. has been accepted by the FCC and approved by ACLASS under Certificate AT-1448 as an independent FCC test laboratory. The Strata Proximity Systems Underground HazardAvert Tramguard PAD complies with the limits for an Intentional Radiator device under FCC Part 15.249. Revision History Reason Date Rev 0 Initial Release September 9, 2011 Rev 1 Corrected Duty Cycle Correction value September 26, 2011 Rev 2 Restored original cable correction factors, Detector settings listed in 4.3.1 October 3, 2011 Strata Proximity Underground Hazardavert Tramguard PAD FCC Certification Test Report September, 2011 WLL Report #12035-01 Rev 2 - iv - © 2011 Washington Laboratories, Ltd. Table of Contents Abstract ........................................................................................................................................... ii 1 Introduction ..............................................................................................................1 1.1 Compliance Statement .................................................................................................... 1 1.2 Test Scope ....................................................................................................................... 1 1.3 Contract Information....................................................................................................... 1 1.4 Test Dates........................................................................................................................ 1 1.5 Test and Support Personnel ............................................................................................ 1 1.6 Abbreviations .................................................................................................................. 2 2 Equipment Under Test .............................................................................................3 2.1 EUT Identification & Description................................................................................... 3 2.2 Test Configuration .......................................................................................................... 4 2.3 Testing Algorithm ........................................................................................................... 4 2.4 Test Location................................................................................................................... 4 2.5 Measurements ................................................................................................................. 5 2.5.1 References ................................................................................................................... 5 2.6 Measurement Uncertainty ............................................................................................... 5 3 Test Equipment ........................................................................................................6 4 Test Results ..............................................................................................................7 4.1 Duty Cycle Correction .................................................................................................... 7 4.2 Occupied Bandwidth: (FCC Part §2.1049) ..................................................................... 8 4.3 Radiated Emissions: (FCC Part §2.1053, RSS210 A2.9) ...............................................9 4.3.1 Test Procedure........................................................................................................... 9 List of Tables Table 1. Device Summary............................................................................................................... 4 Table 2: Test Equipment List.....................................................................................…

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Test Setup Photos ©2008 Washington Laboratories, Ltd Test Setup Photos ©2008 Washington Laboratories, Ltd