Maryland
Terry Bates was the Chief Unit Surveyor at Orgreave Colliery until 1966 when he along with his wife Joan and two young children, Stephen and Karen, moved to Canada.
He went out as a Mining Engineer with a British engineering company to work on the sinking of mine shafts in the potash fields in Saskatchewan.
Since that time he had the privilege of being involved in some of the largest and most interesting mining projects and federal programs all over Canada and the U.S.
They have lived in Ontario, Pennsylvania, West Virginia, Utah, and Maryland.
Terry tells me:
For the Past 20 years I have been an Engineering Management Consultant for the U.S Department of Energy in Washington DC. I could go on forever about these wonderful experiences, however I am now somewhat retired, enjoying our four grown-up children and eight grandchildren. One of my hobbies is that I have accumulated a very nice collection of antique miners lamps from Britain and from many other countries, some dating back to the seventeenth century and beyond. >>more
Here are some maps.
Ontario 
Pennsylvania
West-Virginia
Maryland
Utah
