Laserfiche WebLink
KEY TO UNIQUE FEATURES SYMBOLS (Tables One and Two) <br />Z Multiple Mining Zones <br />S Subsidence features <br />F Mine fires <br />G Gassy Mines or Gas explosions <br />R Reclamation activities <br />* Actual undermined area is probably larger than indicated on <br />map either because the mine map used was older than the <br />latest production figures or because no detailed mine map <br />was available. <br />1 Production figure is probably not as large as actual <br />production due to the absence of records for early mining. <br />-5- <br />