This is a map showing subdistricts of the Southeast Missouri Lead District and the locations of mines opened since 1953, some now closed, all on the west side of the district.  The Indian Creek Mine opened in 1953 following exploration for new deposits to replace those being depleted in the Old Lead Belt, and development of the Viburnum Trend subdistrict followed.  Six mines of the Doe Run Company are active as of 2010 according to the company's website.[1]
Boundaries of the subdistricts were taken from USGS Scientific Investigations Report 2008-5140 which cites Snyder, F.G., and Gerdemann, P.E., 1968, Geology of the Southeast Missouri Lead District, in Ridge, J.D., ed., Ore deposits of the United States, 1933-1967: New York, The American Institute of Mining Metallurgical and Petroleum Engineers, Inc., p. 327-358.
Locations of mines taken from Inventory of Mines, Occurrences, and Prospects in Missouri, Missouri Department of Natural Resources (MoDNR), Division of Geology and Land Survey (DGLS), Geological Survey Program (GSP) 2008-01-10. Digital vector data

Map projection: UTM Zone 15N
Own work
Kbh3rd