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Since miner safety is at the core of everything we do, Alpha is committed to providing employees with the most advanced safety technologies and personal protective equipment available.



Atmospheric Monitoring System


The atmospheric monitoring systems (AMS) is a computerized network capable of precisely measuring atmospheric conditions in an underground mine. The AMS transmits ongoing carbon monoxide measurements to a location on the surface which is monitored full time, and provides alerts and alarm signals so that miners can be notified in case of an emergency. The measurements are saved, cataloged and reports can be printed from this system.






This device measures feet per second (fps) of ventilating air current in an underground coal mine. The area where the air reading is taken is then calculated and multiplied by fps to determine the cubic feet per minute (cfm) of airflow. The device is used multiple times each shift to ensure that each working section and other working areas in the mine are being ventilated with the proper amount of air to dilute and carry away harmful gases and dust.

Multi Gas Detectors


These devices detect multiple types of gases concurrently in an underground coal mine. The primary gases measured are methane (CH4), oxygen (O2) and carbon monoxide (CO). Multi gas detectors are required for each group of miners that work together, and any miner that works alone, to check for the presence of any harmful or explosive levels of gas


Self Contained Self Rescuer


Self-contained self rescue (SCSR) devices provide breathable air if the miner encounters an emergency situation when the atmosphere contains smoke, toxic gases or is oxygen deficient. The Ocenco system comprises two devices: The first  is a lightweight, belt-worn unit that provides 10 minutes of breathable air, enough to get the miner to caches of additional SCSRs that are placed strategically throughout the primary and secondary mine escapeways. The SCSRs that are stored in those caches provide one hour of breathable air under normal work load, enabling the miner to replace any units that are expended during the evacuation.



Personal Dust Monitor


Personal dust monitors worn by underground miners safeguard their long-term respiratory health by ensuring that exposure to dust does not exceed mandatory limits. Using a technology called tapered element oscillating microbalance, the PDM 3600 device provides real time microgram mass measurement of personal exposure to respirable dust. It replaces manual dust sampling, which could take 2-3 weeks for test results. With the benefit of continuous and accurate monitoring of atmospheric dust levels, a miner can take immediate action to change positions so dust exposure is minimized. At the end of a shift, dust exposure reading can be downloaded for further analysis providing miners and management with the tools to personally monitor and reduce their exposure, the PDM 3600 along with other engineering and environmental controls are good lines of defense in preventing long-term detrimental health effects


Continuous Miner Remote Box


Remote controls are used to operate a continuous mining machine, which digs coal from the active mine face. This piece of heavy machinery is thus controlled from a distance that is safer to the operator. The remote control also allows operators to stay out of the dust generated from cutting coal, lessens exposure to roof or rib (sidewall) conditions, and lessens exposure to the noise generated by the continuous mining machine.



Miner Tracking Tag


A radio frequency identification (RFID) tag mounted on a miner’s hardhat transmits an identifying signal to tag readers that are placed at strategic points throughout an underground coal mine. The readers transmit the location of all miners to the surface, where the position of all underground personnel can be monitored. The information and location for each miner is displayed on a computerized map and a spreadsheet, which constantly updates positions. Tracking tags are required for all miners working in an underground coal mine and all visitors so that, in case of an emergency, every person’s location can be immediately known.