Manual for Abandoned Underground Mine Inventory and Risk Assessment
Descriptive Paper | Process Flow Chart | Table of Contents
MAY 15, 1998 |
Copyright © 1999 FHWA
Lefchik, Thomas
Cover photo:
Three coal-mine dogs hitched in tandem at an underground mine in Muskingum County. Ohio Division of Geological Survey file photo by State Geologist Wilbur Stout in 1917.