Underground Coal Mines December 2016

COAL_MINE_UNDERGROUND_DNR_IN.SHP provides the locations of all documented underground coal mines that have operated in the coal region of Indiana since the mid-1880s, up to December 31, 2016. COAL_MINE_UNDERGROUND_DNR_IN.SHP is attributed with mine number (IDNR), map number (IDNR), start dates, and end dates. The following is excerpted from the metadata provided by IDNR, Division of Reclamation, for the source point feature class named "SURFACE_AFFECTED": "Coal_Mine_Underground_DNR_IN is a polygon-based ESRI ArcGIS shapefile that shows the location and extent of underground coal mines in the coal region of west-central and southwestern Indiana. Coal_Mine_Underground_DNR_IN includes mine locations from documented underground mines that operated in Indiana since the late 1800s. Coal_Mine_Underground_DNR_IN is attributed to allow the mine polygons to be differentiated based on mine number, source information, and dates of mining."数据集COAL_MINE_UNDERGROUND_DNR_IN.SHP收录了自19世纪80年代中期至2016年12月31日期间，印第安纳州煤炭产区内所有经正式记录的运营过的地下煤矿的位置信息。该数据集附带的属性字段包括煤矿编号（IDNR）、地图编号（IDNR）、开工日期与关停日期。 以下内容摘录自印第安纳州自然资源部（Indiana Department of Natural Resources, IDNR）开垦分局提供的元数据，针对名为"SURFACE_AFFECTED"的源点要素类："COAL_MINE_UNDERGROUND_DNR_IN是一款基于多边形要素的ESRI ArcGIS形状文件（ESRI ArcGIS shapefile），用于展示印第安纳州中西部与西南部煤炭产区内地下煤矿的位置与分布范围。该数据集涵盖了自19世纪晚期以来印第安纳州境内所有经正式记录的运营过的地下煤矿的位置信息，其附带的属性信息可支持通过煤矿编号、来源信息以及开采日期对煤矿多边形要素进行区分。"