Impoundment Inspections: Inspectors are trained to recognize specific signs of structural instability and other hazardous conditions by visual observation and, if applicable to monitor instrumentation. We perform periodic inspections of impoundments (annual, quarterly, monthly) as well as weekly MSHA inspections. We can also provide inspectors to be on site continually, when required. The MSHA inspector certification and annual refresher class training is also available upon request.