Michigan Inactive Coal Mine Extents
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Coal mines are regulated by EGLE through Part 635. No current coal mines exist, and locations of historic coal mines are often unknown/incomplete, therefore this dataset of historical coal mine boundaries is known to be incomplete. Coal Mining began in Michigan in the 1800s but the last active mines closed in the 1950s. There has been no economic interest in Michigan coal for many decades; however, EGLE provides available information related to old coal mines when legacy issues arise, typically related to construction projects near old mine shafts. The current dataset was originally compiled by MDNR, Land and Mineral Services Division, Resource Mapping and Aerial Photography Section in 2001. Additional information can be found on the EGLE Coal Mining webpage. For more information, visit Michigan.gov/EGLE/Maps-Data/GeoWebFace or contact EGLE-GeoWebFace@michigan.gov. Field Name Field Descriptions OBJECTID ESRI ID Number MineName Name of Coal Mine CountyName County name Area Double
本数据集所涉煤矿由密歇根环境、五大湖与能源部（Environmental Great Lakes and Energy, EGLE）依据第635部分进行监管。目前密歇根境内已无现役煤矿，且历史煤矿的位置信息往往缺失或不完整，因此本历史煤矿边界数据集存在信息不全的问题。 密歇根的煤矿开采活动始于19世纪，但最后一批现役煤矿已于20世纪50年代关停。数十年来，该州已无煤炭开采的经济诉求；但当涉及老煤矿遗留问题（通常为旧矿井周边的建设工程相关事宜）时，EGLE会提供现有旧煤矿相关信息。 本数据集最初由密歇根自然资源部（Michigan Department of Natural Resources, MDNR）土地与矿产服务处资源测绘与航空摄影科于2001年编制。更多相关信息可查阅EGLE煤矿开采官方网页。 如需获取更多信息，请访问Michigan.gov/EGLE/Maps-Data/GeoWebFace，或发送邮件至EGLE-GeoWebFace@michigan.gov。 ### 字段说明 字段名 | 字段描述 OBJECTID | ESRI 标识编号 MineName | 煤矿名称 CountyName | 所属县名称 Area | 双精度数值（Double）
