From: Occupational Saftey & Health
Low barometric pressure and low humidity, combined with the seasonal drying of many areas in underground coal mines, have been key factors in past mine explosions.
The U.S. Department of Labor’s Mine Safety and Health Administration has launched its annual “Winter Alert” campaign to call attention to the dangers caused by cold weather. Statistics show that coal-mine explosions occur most often during the colder months, October through March.