Life Support

Emergency

Environmental

Structural

Regulatory Monitoring

CFR 30-7, and 75 Regulation Requirement

Carbonoks, LLC “Safe Haven” Compliance

Section 7.506 - Available Breathable Air

– 96 Hours Oxygen levels minimum 19.5%

Oxygen levelsmaximum 21.0%

Available Breathable Air – 20 miners – 96 Hours

Oxygen levels maintained at 20.0% +/- .5%

Section 75.1507 - Food at 2000 Calories per day per miner

Food at 2,000 Calories per day for 20 miners in the form of (MRE) Meals Ready to Eat

Section 75.1507 -Water at 2. 5 quarts per day per miner

Water at 2.5 quarts per day for 20 miners

Section 75.1507 -Waste Containment

for 96 hours

Waste Containment for 20 miners for 5 days

Section 75.1507 - First Aid – No specification of contents

Advanced First Aid including air splints, isolation collars, isolation board, and spinal injury for 10 miners over a period of 5 days. Advanced Pharmaceutical kit containing medications for blood pressure, diabetes, cardiac, as well as a defibrillator.

Section 7.508 - Air Purge Capability – 25 cubic feet per minute – capacity to allowmultiple entry and exits of chamber

Air Purge Capability – 25 cubic feet per minute capacity to allow multiple entry and exits of chamber

Section 7.502 - Internal temperature not to exceed 95 degrees F apparent

Internal temperature not to exceed 85 degrees F apparent. Average temperature in a mine with ambient air temperatures of 75 degrees F results in an interior temperature of 81 degrees F apparent with miners in a resting position. Where mines have higher ambient air temperatures an optional cooling package is required for the chamber to maintain its 85 degree internal temperatures for 120 hours.

Section 7.507 - Air monitoring for carbon monoxide, carbon dioxide, oxygen, and methane. Ability to monitor internal as well as external gasses in themine.

Provides an IBrid MX6 portable air monitoring device for monitoring carbon monoxide, carbon dioxide, oxygen, and methane. Provides for alarms to be set for minimum and maximum levels of these gasses both visual and audible. The chamber also provides an access port for testing external gasses in themine. The device uses AA batteries stored in the chamber for 21 days of use and a calibration kit. The unit comes preprogrammed to within .5% accuracy upon power up prior to calibration.

Section 7.504 - Electrical systems for refuge alternatives must be intrinsically safe or in explosion proof boxes contained inside the chamber.

Electrical systems for refuge alternatives are in intrinsically safe or in explosion proof boxes contained inside the chamber. The electrical system is also isolated from potential shorts/faults by use of Zener diodes built within the circuitry so that even cutting an exposed MSHA approved wire will not produce an electrical spark sufficient to create an ignition source in an explosive atmosphere. MSHA approval number 18-A090004-0 has been issued for the electrical system in “Safe Haven”.

Section 75.1506 - Must have fire extinguishing capability that will not contaminate the internal air if used.

All fire extinguishers used in “Safe Haven” are the FE style extinguisher. They do not contaminate or pollute the internal air; they simply break the fire triangle.

Section 75.1600-3 - Chambers must connect to existing mine communications systems and be operational during the chamber’s occupancy.

“Safe Haven” is equipped with an external antenna that allows the wireless user or the user of a leaky feeder system to communicate externally by placing the wireless device in the antennae cradle. For mines still using hard wired systems an external jack is provided. This is built custom to the mine.

Section 7.505 - Chambers must be able to withstand 15 PSI dynamic blast loads predeployment.

“Safe Haven” is designed to withstand dynamic blast loads of 36 PSI pre and post-deployment with one condition. If the tent is deployed postdeployment, individuals occupying the tent will not have post-deployment blast protection. Those miners inside the hard shell of “Safe Haven” will have some protection and complete protection if the air lock hatch is closed. There is no requirement in the CFR for post-deployment blast protection.

Section 7.505 - Shelters must be capable of

withstanding in good working order flash fires of 300 degrees F for 3 seconds pre-deployment.

The all-steel “Safe Haven” can withstand flash fires pre and post-deployment of 700 degrees F inside the hard shell portion of the chamber. The carbonfoam version is capable of protecting the miner against 1500 degrees F for one hour pre and post deployment. There is no requirement in the CFR for post-deployment blast protection.

Section 7.508 - Shelters must be airtight.

“Safe Haven” is airtight.

Section 7.505 - Shelters musts have roof supports that hold the chamber in position during an explosion capable of withstanding 15 PSI dynamic blast loads.

“Safe Haven” has adjustable roof supports that hold the chamber in position during an explosion capable of withstanding 36 PSI dynamic blast loads.

Section 7.508 - Shelters must provide systems for scrubbing carbon dioxide and other airborne contaminates from the internal air.

“Safe Haven” uses Lithium Hydroxide (LiOH) canisters for scrubbing the air of carbon dioxide and activated carbon filters to remove other airborne contaminates. There are ample supplies of LiOH to purify the air for 5 days for 20 miners.

Section 7.505 - Provide at least 15 square feet of space per miner and 60 cubic feet of space per miner depending on the ceiling height of themine.

“Safe Haven” meets and exceeds these requirements with the deployment of the airtight tent provided in the entryway and the frame located in the steel framework.

Section 7.504 - Chamber must contain a repair kit to enable repair of the shelter in the event of damage.

A repair kit providing basic tools is provided in “Safe Haven” for repairs to gaskets, and compressed tank fittings. Also included are tape and other tools to perform basic repair.

Section 7.506 - Pressure within the chamber may not exceed .18 psi above standard air pressure while providing relief through a pressure relief valve.

“Safe Haven” is manufactured with pressure relief valves rated at .18 psi located in both the main cabin and the airlock. The air inside the chamber is maintained at normal atmospheric pressure to preclude the buildup of nitrogen in the tissue and joints indicative of pressurized environments that can lead to the bends.

Section 7.509 - Refuge Shelter must have the maximum occupancymarked on the entry hatch, the sides marked with “Refuge” and an “out of service” tag to indicate the usability of the chamber. Further, the chamber must also have reflective surfaces that can be seen in low light conditions and markings indicating access points. The MSHA approval numbers must be displayed on the exterior for the unit and all approved systems and devices inside the chamber requiring such an approval.

“Safe Haven” meets and exceeds all these requirements.

Section 75.360 – Requires preshift examination of chambers at fixed intervals. This includes exterior examination for intrusion into the chamber including breaks in the outer wall that could render the chamber ineffective and examination

for seals and compressed gasses.

“Safe Haven” requires a preshift examination that includes a walk around to determine damage to the outer skin of the chamber, examination of the battery charge levels, examination of the door seal to assure the chamber has not been accessed by unauthorized personnel, and that the pressure relief valves have not been blocked by debris. Weekly a check of the interior via the access port needs to be checked for elevated oxygen levels that could indicate leakage of the internal oxygen tanks. Forms are provided each mine for documenting these inspections.

No Requirement

“Safe Haven” is designed to withstand submersion under water to a depth of 150’. Its airlock has the capability of purging water from it (designed after a submarine’s airlock) to allow miners to pass into the main chamber without flooding it.

No Requirement

“Safe Haven” is designed to withstand up to 300,000 lbs of weight as found in a roof fall or blowout force.

No Requirement

Blast protection up to 36 psi blasts post-deployment

No Requirement

Fire protection up to 700 degrees F for one minute post-deployment

No Requirement

On-board pharmaceutical kit and defibrillator

No Requirement

“Safe Haven” provides for the psychological issues related to miners in distress and provides a variety of items to remedy these.