MSHA HANDBOOK SERIES - PH13-V-1 - Mine Safety and Health ...

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COAL MINE SAFETY AND HEALTH GENERAL INSPECTION PROCEDURES HANDBOOK CHAPTER 3 10. Location of Last Open Crosscut. The inspector shall determine the location of the last open crosscut on each working section identified by a permanent reference correlated to the mine map (e.g., survey spad number, crosscut number, etc.). Installation of Permanent Stoppings on Working Sections Inspectors shall determine if the requirements of §§ 75.333(b)(1), and (b)(3), 75.350(c), and 75.380(g) regarding the installation of these permanent ventilation controls and each standard states a specific location where they shall be built and maintained. Unless the mine operator can provide a valid justification for the District Manager to approve a greater number of open crosscuts in the mine’s ventilation plan, permanent stoppings installed to separate intake and return aircourses must be completed in the third crosscut outby the face by the time the face crosscut is cleaned, bolted, and ready for travel. Permanent stoppings installed to separate an intake air course or the primary escapeway from the belt haulage way are to be completed as part of the belt move and prior to the resumption of mining. Documentation Required: The location of the last open crosscut of a MMU should be determined and documented in the inspection notes. The inspector should clearly mark only once the location of each MMU that contributes to the E01 inspection by date and initials on the mine tracking map. The documentation should be by MMU number and permanent reference to a location that will be included in the operator’s mine map submitted to the District Manager. 11. Mining/ Work Cycle. The inspector shall observe the complete mining cycle on each active producing working section. The physical condition of the working section (roof and rib conditions, cleanup/rock dusting, ventilation controls, haulage practices, approved plan compliance, etc.) shall be carefully evaluated during these inspection activities. The inspector shall measure the air quantity in the last open crosscut in each set of entries or rooms on each working section, the quantity of air reaching the intake end of a pillar line, at the end of the face ventilating device (if required) where equipment is being operated, the air velocity at each end of the longwall face and the quantities approved in the ventilation plan. The inspector will assure that the face ventilation control devices are installed and maintained in accordance with the approved ventilation plan and visually check that water sprays used for respirable dust suppression are properly maintained and functioning each time the mining/work cycle is observed. This evaluation is in addition to Item 4 of this chapter (Dust Control Parameters). Documentation Required: Inspector observation of the complete mining/work cycle should be documented in the inspection notes to show the MMU number, the method Release 1 (February 2013) 3-60
COAL MINE SAFETY AND HEALTH GENERAL INSPECTION PROCEDURES HANDBOOK CHAPTER 3 of mining (continuous mining advance, continuous mining retreat, conventional mining advance, blasting from the solid advance, etc.) the date observation of the mining/work cycle was started, and the date this procedure was fully completed for that MMU. The inspector should document the results of air readings in the narrative portion of the inspection notes. 12. Operations Under Water. The operator’s compliance with plans approved under §§ 75.388(f) (Boreholes in advance of mining) or 75.1716 (Operations under water) shall be evaluated by the inspector for compliance with applicable standards and approved plans. Discussions shall be conducted with affected miners and mine supervisors to evaluate their familiarity with plan requirements. (Refer to Information Circular 8741 for further guidance.) 13. Post-Accident Communication and Tracking System. Conduct a functional test of the post-accident communication and tracking system by contacting the responsible person using the post-accident untethered communication device and requesting that the responsible person identify the location of a miner, who is at a location known to the inspector. 14. Potable Water (Working Section). The inspector shall determine if potable water is available and in compliance with §§ 75.1718 (Drinking water) and 75.1718-1 (Drinking water; quality). This evaluation shall include information obtained from the miners and the operator. 15. Rock Dust Sampling. The inspector should collect rock dust samples on each advancing and retreating active working section in the mine. Most rock dust samples will be collected between 40 feet outby the working faces and 1,000 feet outby the working faces. Rock dust samples should also be collected conducted in previously mined active areas. From 1,000 feet outby the working faces to the mouth of the section, inspectors will collect at least two band samples per air course. Note: Refer to chapter 5, Rock Dust Sampling section of this handbook for additional required procedures. Documentation Required: The MMU number (Sampling Location Area), a description of the sampling area (Location In Mine), each sample collected identified by a permanent reference correlated to the mine map, e.g., survey spad number, crosscut number, etc.), and the percentage of methane detected on a handheld detector shall be documented in the inspection notes for each sample collected. 16. Roof and Rib Conditions. The inspector shall observe roof and rib conditions on each active working section to determine compliance with applicable standards and approved plans. Special attention shall be given to roof control Release 1 (February 2013) 3-61
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MSHA HANDBOOK SERIES - PH13-V-1 - Mine Safety and Health ...

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