What do we call coal seams that are less than 48 inches in height?

Coal seams that are less than 48 inches in height are referred to as low coal. This designation is essential in the mining industry as it affects the methods and equipment used for extraction. Low coal seams can present unique challenges compared to thicker seams, including the need for specialized mining techniques to maximize recovery while ensuring safety. The term specifically delineates these smaller thickness seams from higher seams, which typically allow for more conventional mining practices and better economic viability. Understanding these classifications is vital for effective mining operations and resource management in coal production.