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Mine Subsidence - Residential Damage and Problems (1 credit hours/1 HSW Hours)
This 1 hour course discusses subsidence problems associated with past underground mining activity. Typical problems include cracks in foundations and walls, jammed or broken windows, and broken water, sewer, and gas lines. Information is also provided about conditions such as expansive soils or brick thermal expansion that may produce problems frequently mistaken as being caused by subsidence. Detailed advice is provided as to what to do when subsidence problems are suspected and what help is available for property owners faced with these kinds of problems.  
 
The course is based on specific conditions in Illinois, but many of these same conditions also exist in Indiana, Kentucky, Ohio, Pennsylvania, and West Virginia. These states are underlain with coal deposits that lie so far below the surface that they can be extracted only through underground (rather than surface) mining.  Many of these mines were dug well over one hundred years ago in areas that were uninhabited or sparsely settled at the time.  Today these areas are home to residential subdivisions and retail centers, some of which now sit above abandoned mines.  As the coal pillars and timbers that originally supported the mine roof collapse from age and water damage, the roof comes down, and the soil and rock overlying the mine sink. The surface of the land above the mine subsides, and any structure lying on the surface is liable to damage from the subsidence.
Mark Rossow
This course teaches the following specific knowledge and skills:
 
  • Students will learn signs and underlying causes of subsidence.
  • Students will know about high-extraction mining methods with planned subsidence and low-extraction mining methods such as room-and-pillar, with unplanned subsidence.
  • Students will understand the dangers of abandoned mines.
  • Students will understanding pit and sag subsidence.
  • Students will know methods of repairing damaged houses built on slabs, with crawl spaces, or with basements. 
  • Students will learn the effects of subsidence on utilities and drainage.
  • Students will be able to distinguish between damage caused by mine subsidence from damage caused by soil expansion, freezing and thawing, piping, or brick expansion with temperature change.  

Titan Continuing Education, Inc. | 1519 Dale Mabry Hwy, Ste 201 Lutz, FL 33548 | Toll Free: 800.960.8858 | Email: info@TitanCE.com .