I have a md ordered and have been reading the manual as well as determining areas to hunt when it arrives. I will try my yard first to get acquainted with my machine. After that My parents have a 140 acre farm that is around 100yrs old. I have a friend that owns a field next door to a school that has been operating for 40-50 years or more. Within 1 mile of my house there are 3 sites where houses once stood and 1 site where a school and store once operated. One of the house sites has a bottle dump with blue glass so I hope it will be good. I will have to obtain permission for a couple of those sites, but I know all the owners fairly well. After exploring local options I have a friend that owns land where a couple ghost towns/mining camps were located, so I should have no shortage of hunting ground for the foreseeable future.