hello,,,I have an old timber framed bungalow which was built near the entrance of a mine shaft which was active in the 1800's,,,i plan to sell the place but the last buyer dropped out as search came back that said it could be on contaminated ground and needs investigation,,,can anyone tell me what tests would need to be done,,,how they are done,,,and some idea of cost involved???,,,I have had a site investigation done a long time ago on some land we built on where a lad came and put some tripods up and core drilled the earth in various places,,,i assumed this was just to see what type of foundation we needed,,,is it the same kind of thing to test for contaminated ground etc???,,,