Mine workings in Scotland go back a very long time, so it really depends on how far back you want to go. If it is a particular area you are looking for, you may have to visit the region's main public library and ask to see their archives. They usually keep local maps that go back a very long time, so ask them about mine workings in the area. Meanwhile, I will try to help. Which mine are you looking for, and whereabouts in Scotland?