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Bridges & Structures

 

Interstate Technical Group on Abandoned Underground Mines
An Interactive Forum

Locating and Characterizing Abandoned Mines Using Microgravity: Figure 6


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Map of coal reserve area

Figure 6. The interpreted trend of the roll (red). As a result of the interpretation, proposed longwall panels in this reserve block were reduced from four panels to three, and subsequently shortened and staggered along the western flank of the roll.

Updated: 06/29/2015
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000