The Development of Guidelines for Closing Eastern Underground Coal Mines.
For Reference Only At Bureau Libraries :143 pages
The purpose of this research was to study mine-related problems in several underground mining districts with the goal of developing guidelines or suggestions for improved closing procedures for underground mines that would reduce or eliminate these problems. This report documents conditions of closed underground mines in three eastern coal mine districts--two in Ohio and one in Illinois.
CP; Final Contract Report;
For Reference Only At Bureau Libraries
Michigan Tech. Univ.