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Washington, DC 20590
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Manual for Abandoned Underground Mine Inventory and Risk Assessment
Figure 1: Process Flow Chart

Figure 1 - Process Flow Chart. The figure shows a flow chart to the Abandoned Underground Mine Inventory and Risk Assessment Process.  It starts with an initial informational review then goes to site inventory.  The process continues to initial site investigation and initial site evaluation which results in classifying into one of five groups (Surface Deformation, Mine Opening, High Rating, Low Rating, or Eliminated Sites).  The process proceeds to periodic monitoring, detailed site evaluation, prioritized site listing and priority site investigation.  All of these steps feed back to site reevaluation and possible reclassification to a different group.  From priority site investigation the process proceeds to priority site recommendations, development of construction contract documents, remedial construction, then to an active file and back to monitoring.

Figure 1: Process Flow Chart

Updated: 07/01/2015
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000