Continuous miners vs. longwalls (Journal Article) OSTI.GOV
Compares longwall mining with continuous roomandpillar mining of a 6ft coalbed covering almost 5,000 acres. Considers capital investments, operating expenses and coal recovery. Points out that mine operators must also evaluate the effects of the difference in productivity on future cost increases, accident frequency and the environment.
Author: Nilsson, D., Reddy, N.A.