Coal Mining Class Flashcards 100 Questions

Miner's Safety Regulations

• Miners' Self-Contained Self-Rescuers (SCSR) must be checked daily to ensure functionality.
• When transporting explosives, maintain a distance of 1/2 mile behind a mantrap for safety.
• Firefighting equipment should be positioned at least 25 feet from wooden doors where power lines are present.

Equipment and Speed Regulations

• If the roof height is 18 inches above a belt, the maximum allowable belt speed is 250 feet per minute (fpm).
• A roof height of 24 inches allows for a maximum belt speed of 300 fpm.

Escape Routes and Safety Protocols

• An escape line, also known as a lifeline, is critical in escape ways to follow during evacuation.
• A "fire boss" is the designated individual responsible for inspecting hazards before entry into the mine.
• Tags on Nip equipment must correspond to the equipment they power, ensuring accurate identification.

Escape Routes Maintenance

• Escape ways must be walked every 90 days to confirm safety.
• Each mining section should have at least two escape routes.
• One escape route must provide intake air to ensure safe breathing environment.

Equipment Interaction and Signaling

• When passing by running equipment, flag the operator with your cap light and wait for a response before proceeding.
• The "Red zone" refers to the area directly in front of moving equipment, highlighting a danger zone.

Communication Signals

• A circular motion of the cap light signifies "Come here."
• Up-and-down motion of the cap light signifies "Go or Yes."
• Back-and-forth motion of the cap light signifies "Stop or No."

Safety Measures for Hazards

• In case of roof slips, take immediate action to add additional support rather than ignoring the situation.
• A clay vein results from the formation of clay during the coal's creation process, requiring proper handling.

Tool Usage and Torque Specifications

• A torque wrench is essential for checking the correct torque on roof bolts to ensure secure installation.
• The roof control plan outlines specific torque requirements for bolts to maintain structural integrity.

Electrical Bonding

• A cross bond is utilized to connect copper wire between track rails, aiding in grounding.
• Rails must be properly bonded to enhance grounding rather than merely holding them in place or supplying power.