This is my first post. So I just spent alot of money on a new M. detector and went to some land that I thought was public property because they are in the beggining phase of constructing a new PUBLIC school. I was told that I could not detect here because the contractors would not permit it. I was told that they are afraid that some one will find something and possibly stop their construction process. I was a little agrivated , But can they do that? Its now public land!!!